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Efficient application of carbon-based nanomaterials for high-performance perovskite solar cells

Rare Metals 2021年第10期40卷 2747-2762页

作者： ying-chun niu Li-Feng Yang M.H.Aldamasy Meng Li Wen-Jie Lan Quan Xu Yuan Liu Shang-Lei Feng ying-Guo Yang State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China Shanghai Synchrotron Radiation Facility(SSRF) Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China Shanghai Institute of Applied Physics Chinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai 201800China Helmholtz-Zentrum Berlin für Materialien und Energie Berlin 12489Germany M.H.Aldamasy Egyptian Petroleum Research InstituteCairo 11727Egypt Egyptian Petroleum Research Institute Cairo 11727Egypt Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science and Technology UniversityBeijing 100192China

The power conversion efficiency of perovskite solar cells(PSCs) has rapidly risen from 3.8% to over25.0% in just about one decade, which attracts a lot of attention from the scientific and engineering ***, some challenges remain, hindering the progress of commercialization such as intrinsic and extrinsic(environmental) stabilities, which can be improved by an interface and structural engineering. In recent years, some reports indicate that the interfacial engineering using carbon-based nanomaterials additives plays a crucial role in the process of charge carriers and perovskite crystal growth and thereby enhances device performance and operational stability. Here, we review the development of the varieties of carbon-based nanomaterials applications in PSCs, such as hole-transporting layers(HTLs), electron-transporting layers(ETLs), perovskite bulk layer, and their ***, we proposed a further suggestion about the optimized preparation conditions for the preparation of PSCs, which may inspire the researcher to discover, design,and manufacture the more efficient perovskite solar cells in academic and industry.

关键词： Carbon-based nanomaterials Perovskite solar cells Stability Efficiency

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Shaly detritus embedded epoxy-resin coated proppants

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Petroleum Science 2022年第4期19卷 1735-1744页

作者： Zhao-Hui Lu Xiu-Ping Lan Yong Yuan Jian-Kun Zhou Si-Yuan Chen Fan Fan ying-chun niu Shou-Zhen Li Kai-Yi Hu Yang Zhou Quan Xu Key Laboratory of Shale Gas Exploration Ministry of Natural ResourcesChongqing Institute of Geology and Mineral ResourcesChongqing401120China State Key Laboratory of Petroleum Resources and Prospecting Bejing Key Laboratory of Biogas Upgrading UtlizationHarvard SEAS-CUPB Joint Laboratory on Petroleum ScienceChina University of Petroleum(Beijing)Beijing102249China

Proppant plays a significant role in the hydraulic fracturing process, which can affect the production of oil and gas wells. Due to the high density and low adhesion force, the settling speed of traditional proppants is fast, which will lead to the blockage of a crack channel. In this study, a proppant with double layer structure is fabricated by coating epoxy-resin and shaly detritus on ceramic proppants for the first time,respectively. The epoxy-resin enables the shaly detritus to be coated on the proppant successfully, which can provide a new method for shaly detritus treatment. The adhesive ability of shaly detritus and epoxyresin coated proppants(SEPs) is improved by 10.4% under the load force of 500 n N, which prolongs the time for the fracture to close. At the same time, the suspending ability of SEPs is two times higher than the uncoated proppants. Once the guar gum solution concentration is 0.3 wt%, the settling time of SEPs is36.7% longer than that of the uncoated proppants, which can effectively reduce the settlement of proppants in the crack. In addition, the hydrophobicity of the SEPs is enhanced, which reduces the wateroil ratio of crude oil and increases the liquid conductivity tested by deionized water. In summary, this new proppant is expected to promote the development of unconventional oil and gas resources.

关键词： Coated proppant Shaly detritus Hydrophobicity Conductivity

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Clinical effects of phospholipase D2 in attenuating acute pancreatitis

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World Journal of Gastroenterology 2025年第2期31卷 52-60页

作者： Jin-Wei niu Guo-Chao Zhang Wu Ning Hai-Bin Liu Hua Yang Chao-Feng Li Department of General Surgery China-Japan Friendship HospitalBeijing 100029China

BACKGROUND The objective of the current study was to elucidate the clinical mechanism through which phospholipase D2(PLD2)exerted a regulatory effect on neutrophil migra-tion,thereby alleviating the progression of acute *** To elucidate the clinical mechanism through which PLD2 exerted a regulatory effect on neutrophil migration,thereby alleviating the progression of acute *** The study involved 90 patients diagnosed with acute pancreatitis,admitted to our hospital between March 2020 and November 2022.A retrospective analysis was conducted,categorizing patients based on Ranson score severity into mild(n=25),moderate(n=30),and severe(n=35)*** data was collected for each *** blot analysis assessed PLD2 protein expression in patient ***-time reverse transcription polymerase chain reaction was used to evaluate the mRNA expression of chemokine receptors associated with neutrophil *** levels of inflammatory factors in patients were detected using enzyme-linked immunosorbent *** migration tests were conducted to compare migration of neutrophils across groups and analyze the influence of PLD2 on neutrophil *** Overall data analysis did not find significant differences between patient groups(P>0.05).The expression of PLD2 protein in the severe group was lower than that in the moderate and mild groups(P<0.05).The expression level of PLD2 in the moderate group was also lower than that in the mild group(P<0.05).The severity of acute pancreatitis is negatively correlated with PLD2 expression(r=-0.75,P=0.002).The mRNA levels of C-X-C chemokine receptor type 1,C-X-C chemokine receptor type 2,C-C chemokine receptor type 2,and C-C chemokine receptor type 5 in the severe group are significantly higher than those in the moderate and mild groups(P<0.05),and the expression levels in the moderate group are also higher than those in the mild group(P<0.05).The levels of C-reactive protein,tumo

关键词： Phospholipase D2 Neutrophil migration Acute pancreatitis Retrospective analysis Inflammatory response

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High Precision Prediction of Rolling Force Based on Fuzzy and Nerve Method for Cold Tandem Mill

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Journal of Iron and Steel Research International 2008年第2期15卷 23-27页

作者： JIA chun-yu SHAN Xiu-ying niu Zhao-ping College of Mechanical Engineering Yanshan University Qinhuangdao 066004 Hebei China

The rolling force model for cold tandem mill was put forward by using the Elman dynamic recursive network method,based on the actual measured ***,a good assumption is put forward,which brings a full universe of discourse self-adjusting factor fuzzy control,closed-loop adjusting,based on error feedback and expertise into a rolling force prediction model,to modify prediction outputs and improve prediction precision and *** simulated results indicate that the method is highly effective and the prediction precision is better than that of the traditional *** relative error is less than ±4%,so the prediction is high precise for the cold tandem mill.

关键词： Elman dynamic recursive network fuzzy control cold tandem mill rolling force prediction

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Bidirectional regulation of the brain-gut-microbiota axis following traumatic brain injury

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Neural Regeneration Research 2025年第8期20卷 2153-2168页

作者： Xinyu You Lin niu Jiafeng Fu Shining Ge Jiangwei Shi Yanjun Zhang Pengwei Zhuang National Key Laboratory of Chinese Medicine Modernization Tianjin University of Traditional Chinese MedicineTianjinChina Haihe Laboratory of Modern Chinese Medicine Tianjin University of Traditional Chinese MedicineTianjinChina First Teaching Hospital of Tianjin University of Traditional Chinese Medicine TianjinChina National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion TianjinChina

Traumatic brain injury is a prevalent disorder of the central nervous *** addition to primary brain parenchymal damage,the enduring biological consequences of traumatic brain injury pose long-term risks for patients with traumatic brain injury;however,the underlying pathogenesis remains unclear,and effective intervention methods are *** dysfunction is a significant consequence of traumatic brain *** the most densely innervated peripheral tissue in the body,the gut possesses multiple pathways for the establishment of a bidirectional“brain-gut axis”with the central nervous *** gut harbors a vast microbial community,and alterations of the gut niche contribute to the progression of traumatic brain injury and its unfavorable prognosis through neuronal,hormonal,and immune pathways.A comprehensive understanding of microbiota-mediated peripheral neuroimmunomodulation mechanisms is needed to enhance treatment strategies for traumatic brain injury and its associated *** comprehensively reviewed alterations in the gut microecological environment following traumatic brain injury,with a specific focus on the complex biological processes of peripheral nerves,immunity,and microbes triggered by traumatic brain injury,encompassing autonomic dysfunction,neuroendocrine disturbances,peripheral immunosuppression,increased intestinal barrier permeability,compromised responses of sensory nerves to microorganisms,and potential effector nuclei in the central nervous system influenced by gut ***,we reviewed the mechanisms underlying secondary biological injury and the dynamic pathological responses that occur following injury to enhance our current understanding of how peripheral pathways impact the outcome of patients with traumatic brain *** review aimed to propose a conceptual model for future risk assessment of central nervous system-related diseases while elucidating novel insights into the bidirectional effec

关键词： traumatic brain injury brain-gut-microbiome axis gut microbiota neuroimmune immunosuppression host defense vagal afferents bacterial infection dorsal root ganglia nociception neural circuitry

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C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 pathway as a therapeutic target and regulatory mechanism for spinal cord injury

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Neural Regeneration Research 2025年第8期20卷 2231-2244页

作者： Xiangzi Wang Xiaofei niu yingkai Wang Yang Liu Cheng Yang Xuyi Chen Zhongquan Qi School of Medicine Guangxi UniversityNanningGuangxi Zhuang Autonomous RegionChina Graduate School of Tianjin University of Traditional Chinese Medicine TianjinChina Characteristic Medical Center of People’s Armed Police Forces TianjinChina Fujian Maternity and Child Health Hospital FuzhouFujian ProvinceChina

Spinal cord injury involves non-reversible damage to the central nervous system that is characterized by limited regenerative capacity and secondary inflammatory *** expression of the C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 axis exhibits significant differences before and after *** studies have revealed that the C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 axis is closely associated with secondary inflammatory responses and the recruitment of immune cells following spinal cord injury,suggesting that this axis is a novel target and regulatory control point for *** review comprehensively examines the therapeutic strategies targeting the C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 axis,along with the regenerative and repair mechanisms linking the axis to spinal cord ***,we summarize the upstream and downstream inflammatory signaling pathways associated with spinal cord injury and the C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 *** review primarily elaborates on therapeutic strategies that target the C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 axis and the latest progress of research on antagonistic drugs,along with the approaches used to exploit new therapeutic targets within the C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 axis and the development of targeted ***,there are presently no clinical studies relating to spinal cord injury that are focusing on the C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 *** review aims to provide new ideas and therapeutic strategies for the future treatment of spinal cord injury.

关键词： apoptosis C-C motif chemokine ligand 2/C-C motif chemokine receptor 2 pathway C-C motif chemokine receptor 2 antagonists chemokine ligand 2 chemokine receptor 2 inflammation macrophage microglia spinal cord injury therapeutic method

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Liposomes as versatile agents for the management of traumatic and nontraumatic central nervous system disorders:drug stability,targeting efficiency,and safety

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Neural Regeneration Research 2025年第7期20卷 1883-1899页

作者： Mingyu Zhang chunyu Xiang Renrui niu Xiaodong He Wenqi Luo Wanguo Liu Rui Gu Department of Orthopedic Surgery China-Japan Union Hospital of Jilin UniversityChangchunJilin ProvinceChina

Various nanoparticle-based drug delivery systems for the treatment of neurological disorders have been widely ***,their inability to cross the blood–brain barrier hampers the clinical translation of these therapeutic *** are nanoparticles composed of lipid bilayers,which can effectively encapsulate drugs and improve drug delivery across the blood–brain barrier and into brain tissue through their targeting and ***,they can potentially treat traumatic and nontraumatic central nervous system *** this review,we outlined the common properties and preparation methods of liposomes,including thin-film hydration,reverse-phase evaporation,solvent injection techniques,detergent removal methods,and microfluidics ***,we comprehensively discussed the current applications of liposomes in central nervous system diseases,such as Alzheimer's disease,Parkinson's disease,Huntington's disease,amyotrophic lateral sclerosis,traumatic brain injury,spinal cord injury,and brain *** studies related to liposomes are still in the laboratory stage and have not yet entered clinical ***,their application as drug delivery systems in clinical practice faces challenges such as drug stability,targeting efficiency,and ***,we proposed development strategies related to liposomes to further promote their development in neurological disease research.

关键词： Alzheimer's disease amyotrophic lateral sclerosis brain tumors central nervous system Huntington's disease liposome drug delivery neurological disorders Parkinson's disease spinal cord injury traumatic brain injury

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加压下甲烷氧化偶联反应工艺条件的研究

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天然气化工—C1化学与化工 2002年第5期27卷 1-3,7页

作者：丑凌军蔡迎春张兵牛建中李树本中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室甘肃兰州730000

报道了Na W Mn催化剂加压条件下的甲烷氧化偶联反应性能 ,详细考察了反应条件对Na W Mn催化剂反应性能的影响。结果表明 ,Na W Mn催化剂在较高压力条件下依然具有良好的甲烷氧化偶联反应性能 ,在烷氧比 8、温度 75 0℃、空速 1 5× 10 5... 详细信息

报道了Na W Mn催化剂加压条件下的甲烷氧化偶联反应性能 ,详细考察了反应条件对Na W Mn催化剂反应性能的影响。结果表明 ,Na W Mn催化剂在较高压力条件下依然具有良好的甲烷氧化偶联反应性能 ,在烷氧比 8、温度 75 0℃、空速 1 5× 10 5h 1、压力 0 6MPa无稀释气的最佳实验条件下 ,可以得到 16 %的甲烷转化率和 82 %的C2 + 烃选择性。

关键词：氧化偶联反应工艺条件 Na-W-Mn催化剂加压条件 C2烃钠钨锰催化剂

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Fuzzy Neural Model for Flatness Pattern Recognition

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Journal of Iron and Steel Research International 2008年第6期15卷 33-38页

作者： JIA chun-yu SHAN Xiu-ying LIU Hong-min niu Zhao-ping School of Mechanical Engineering Yanshan University Qinhuangdao 066004 Hebei China

For the problems occurring in a least square method model, a fuzzy model, and a neural network model for flatness pattern recognition, a fuzzy neural network model for flatness pattern recognition with only three-input and three output signals was proposed with Legendre orthodoxy polynomial as basic pattern, based on fuzzy logic expert experiential knowledge and genetic-BP hybrid optimization algorithm. The model not only had definite physical meanings in its inner nodes, but also had strong self-adaptability, anti interference ability, high recognition precision, and high velocity, thereby meeting the demand of high-precision flatness control for cold strip mill and providing a convenient, practical, and novel method for flatness pattern recognition.

关键词： flatness pattern recognition Legendre orthodoxy polynomial genetic-BP algorithm fuzzy neural network

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The central limit theorem and chaos

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Applied Mathematics(A Journal of Chinese Universities) 2009年第2期24卷 230-236页

作者： niu ying-xuan Department of Mathematics and Physics Wanxi College Lu＇an 237012 China

Let X be a compact metric space studies some relationships between stochastic and f ： X→ X be a continuous map. This paper and topological properties of dynamical systems. It is shown that if f satisfies the central limit theorem, then f is topologically ergodic and / is sensitively dependent on initial conditions if and only if / is neither minimal nor equicontinuous.

关键词： the central limit theorem topologically ergodic sensitive dependence on initial conditions min- imal equicontinuous

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