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基于SD模型的乌苏市水资源承载力仿真与情景模拟

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长江科学院院报 2024年第5期41卷 45-50,58页

作者：徐慧敏何英伊力亚斯·吐尔逊司涵卢潇悦新疆农业大学水利与土木工程学院乌鲁木齐830052 新疆维吾尔自治区水利科技推广总站乌鲁木齐830052

乌苏市位于天山北坡经济带中部,是天山经济带的核心开发区。由于水资源短缺,乌苏市核心经济开发区的建设受到了阻碍。因此,研究乌苏市水资源的最优可持续发展模式已成为迫切需要解决的问题。基于系统动力学原理,利用Vensim软件,建立乌... 详细信息

乌苏市位于天山北坡经济带中部,是天山经济带的核心开发区。由于水资源短缺,乌苏市核心经济开发区的建设受到了阻碍。因此,研究乌苏市水资源的最优可持续发展模式已成为迫切需要解决的问题。基于系统动力学原理,利用Vensim软件,建立乌苏市系统动力学模型,拟定4种不同的发展情景模式,基于乌苏市2010—2020年的有关历史数据,预测了2021—2030年乌苏市水资源承载力的动态变化,从而找到改善乌苏市水资源承载能力的途径。结果表明:现状延续型情景下乌苏市2030年的需水总量达9.83亿m^(3),超过乌苏市2030年用水总量控制目标,缺水量达2.66亿m^(3);在现状延续型、协调发展型、经济发展型和节水型4种情景下,乌苏市2025年的水资源供需比分别为0.71、0.80、0.69、0.89,2030年的水资源供需比分别为0.73、0.85、0.68、0.92;乌苏市水资源承载力一直处于供需不平衡的局面,只有协调发展情景下,乌苏市水资源供需比较高且趋向良性发展模式;现状延续型情景下,2022—2030年,乌苏市的水资源承载状态均为临界承载状态,且随着时间的推移,承载状态将逐渐恶化,未来乌苏市的水资源将无法承载起社会经济的发展规模。研究成果可为乌苏市水资源的高效合理利用提供理论依据。

关键词：水资源承载力系统动力学(SD)模型乌苏市情景模拟

Fast algorithms of public key cryptosystem based on Chebyshev polynomials over finite field

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The Journal of China Universities of Posts and Telecommunications 2011年第2期18卷 86-93页

作者： LI Zhi-hui CUI Yi-dong xu hui-min Key Laboratory of Trustworthy Distributed Computing and Service Ministry of Education Beijing University of Posts and Telecommunications Beij ing 100876 China School of Information and Communication engineering Beijing University of Posts and Telecommunications Beijing 100876 China

The computation of Chebyshev polynomial over finite field is a dominating operation for a public key *** generic algorithms with running time of have been presented for this computation：the matrix algorithm and the characteristic polynomial algorithm,which are feasible but not *** this paper,these two algorithms are modified in procedure to get faster execution *** complexity of modified algorithms is still,but the number of required operations is reduced,so the execution speed is ***,a new algorithm relevant with eigenvalues of matrix in representation of Chebyshev polynomials is also presented,which can further reduce the running time of that computation if certain conditions are *** implementations of these algorithms are realized,and the running time comparison is *** an efficient scheme for the computation of Chebyshev polynomial over finite field is presented.

关键词： Chebyshev polynomial algorithm running time square root

Expression of a novel dipeptidyl peptidase 8(DPP8)transcript variant,DPP8-v3,in human testis

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Asian Journal of Andrology 2005年第3期7卷 245-255,页

作者： hui Zhu Zuo-min Zhou Li Lu min xu hui Wang Jian-min Li Jia-Hao Sha Key Laboratory of Reproductive Medicine Department of Histology and Embryology Nanjing Medical UniversityNanjing 210029 China

Aim： To investigate the role of a novel dipeptidyl peptidase 8 transcript variant （DPP8-v3） gene in testis development and/or spermatogenesis. Methods： A human testis cDNA microarray was hybridized with mRNA of human adult and fetal testes. Differentially expressed clones were sequenced and characterized and their expression was analyzed by real-time reverse transcription polymerase chain reaction （RT-PCR） and Southern-blot analysis. Results： A new transcript variant of the human dipeptidyl peptidase （DPP8）, exhibiting a 5-fold higher expression level in human adult than that in fetal testes, was cloned and was named DPP8 variant 3 （DPP8-v3）. The full-length sequence of DPP8-v3 was 3,030 bp, encoding a protein of 898 amino acids. Conclusion： DPPS-v3 is a novel human DPP8 transcript variant highly expressed in the adult testis. Similar to DPPIV, DPP8-v3 may play a key role in the immunoregulation of testes and accordingly may influence spermatogenesis and male fertility. （Asian J Androl 2005 Sep; 7： 245-255）

关键词： DPP8 dipeptidyl peptidase IV (DPPIV) DPP8-v3 immunoregulation spermatogenesis testis

单侧椎弓根旁与经椎弓根入路行椎体成形术治疗胸腰段骨质疏松性椎体压缩骨折的疗效比较

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中国现代医学杂志 2024年第17期34卷 41-47页

作者：陈喜安刘绍灵徐荟旻岳阳市人民医院湖南岳阳414000

目的探讨经单侧椎弓根旁入路穿刺至对侧旁正中线行椎体成形术(UPA-PVP)与传统经单侧椎弓根入路行经皮椎体成形术(TUA-PVP)治疗胸腰段骨质疏松性椎体压缩骨折(OVCF)的疗效。方法回顾性分析2018年3月—2023年10月在岳阳市人民住院并行经... 详细信息

目的探讨经单侧椎弓根旁入路穿刺至对侧旁正中线行椎体成形术(UPA-PVP)与传统经单侧椎弓根入路行经皮椎体成形术(TUA-PVP)治疗胸腰段骨质疏松性椎体压缩骨折(OVCF)的疗效。方法回顾性分析2018年3月—2023年10月在岳阳市人民住院并行经皮穿刺椎体成形术治疗的254例胸腰椎OVCF患者,按不同治疗方法分为UPA-PVP组(143例)和TUA-PVP组(111例)。均为胸腰椎(T8~L2)单个椎体骨折。UPA-PVP组根据术前胸腰椎正侧位X射线片、CT及MRI评估伤椎内靶向穿刺点,即穿刺椎体对侧旁正中线与椎体前中1/3交界处,根据靶向穿刺点逆向设计穿刺路径及确定体表定位点;TUA-PVP组采用传统经椎弓根投影10点或2点方法穿刺,参考术后胸腰椎正侧位X射线片、三维CT判断骨水泥在手术椎体内的弥散分布情况。比较两组患者术前、术后4 h、术后2 d及术后6个月患者的腰背部疼痛视觉模拟评分(VAS)及全身恢复情况Oswestry功能障碍指数(ODI),比较两组患者骨水泥渗漏,伤椎再骨折等相关并发症。结果两组患者单个椎体手术时间、术中失血量比较,差异均无统计学意义(P>0.05)。UPA-PVP组单个椎体骨水泥注入量大于TUA-PVP组(P0.05)。两组患者骨水泥总渗漏率比较,差异有统计学意义(P0.05)。结论UPA-PVP与TUA-PVP两种手术方法均能有效缓解OVCF患者腰背部疼痛。UPA-PVP方法治疗OVCF,以穿刺靶点为目标,逆向设计穿刺路径,简单易行,较TUA-PVP方法能达到更好的骨水泥椎体内分布,降低椎体再骨折率,有效缓解椎体骨折后腰背痛,提高患者生活质量,疗效满意。

关键词：椎体压缩骨折骨质疏松单侧椎弓根旁入路靶点穿刺经皮椎体成形术

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碳纤维表面处理技术的研究进展

纺织科学与工程学报 2024年第2期41卷 111-119页

作者：徐慧敏凌新龙李军生广西科技大学生物与化学工程学院广西柳州545006

碳纤维具有很多优异的特性,被誉为“新材料之王”,广泛应用于很多方面。由于碳纤维表面平滑且化学反应活性不活跃,导致碳纤维复合材料力学性能较差。为了优化复合材料的界面特性和整体性能,必须对其进行表面改性。总结了碳纤维的种类、... 详细信息

碳纤维具有很多优异的特性,被誉为“新材料之王”,广泛应用于很多方面。由于碳纤维表面平滑且化学反应活性不活跃,导致碳纤维复合材料力学性能较差。为了优化复合材料的界面特性和整体性能,必须对其进行表面改性。总结了碳纤维的种类、表面结构特点和性能、改性方法及其应用,为未来碳纺织品的发展提供一定的理论参考,推动碳纤维纺织品向着绿色、安全、高效的方向发展。

关键词：纺织品碳纤维应用领域改性方法结构特点

Mesh Erosion into Sigmoid Colon after Inguinal Hernia Repair

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Chinese Medical Journal 2017年第9期130卷 1133-1134页

作者： Ying Na Yuan-Hai Sun Zuo-Cheng Sun hui-min xu Department of Ultrasound Weifang People's Hospital Weifang Shandong 261041 China Department of General Surgery Weifang People's Hospital Weighing Shandong 261041 China

To the Editor： Tension-free henlia repair with mesh is currently the most popular technique for herniorrhaphy. Although it is well tolerated with few complications, late-onset complications, such as mesh migration, erosion into associated structures, enterocutaneous fistula, and abscess formation, have been reported We herein report a case of a 67-year-old male with mesh erosion into the sigmoid colon after inguinal hernia repair.

关键词： COMPLICATION PLUG

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推进张家口文化自信自强建设研究

张家口职业技术学院学报 2024年第1期37卷 50-52页

作者：陈军娟杨艳姣徐慧敏岳丽芳张家口职业技术学院马克思主义学院河北张家口075051

张家口市作为中国重要的文化古城,历史悠久,文化底蕴深厚。然而,随着时代的发展和现代化进程的推进,张家口市文化发展面临新的问题和挑战。如何推进张家口文化自信自强建设,提升文化影响力和市场竞争力,是当前急需解决的问题。通过明确... 详细信息

张家口市作为中国重要的文化古城,历史悠久,文化底蕴深厚。然而,随着时代的发展和现代化进程的推进,张家口市文化发展面临新的问题和挑战。如何推进张家口文化自信自强建设,提升文化影响力和市场竞争力,是当前急需解决的问题。通过明确文化自信自强的内涵,分析张家口文化自信自强建设的优势与不足,提出推进张家口文化自信自强建设的一些具体建议。

关键词：文化自信文化自强张家口

Application of acellular dermal matrix for intestinal elongation in animal models

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World Journal of Gastroenterology 2010年第16期16卷 2023-2027页

作者： xu, hui-min Wang, Zhen-Jun Han, Jia-Gang Ma, Hua-Chong Zhao, Bo Zhao, Bao-Cheng Capital Med Univ Beijing Chaoyang Hosp Dept Gen Surg Beijing 100020 Peoples R China

AIM:To investigate the eff icacy of acellular dermal matrix(ADM) for intestinal elongation in animal ***:Japanese white big-ear rabbits(n = 9) and Wuzhishan miniature pigs(n = 5) were used in the ***-made and commercial ADM materials were used as grafts,respectively.A 3-cm long graft was interposed in continuity with the small bowel and a sideto-side anastomosis,distal to the graft about 3-4 cm,was *** animals were sacrificed at 2 wk,4 wk,8 wk and 3 mo after surgery and the histological changes were evaluated under light microscope and electron ***:The animals survived after the operation with no evidence of peritonitis and *** ad-hesions were found between the graft and surrounding *** grafts were completely absorbed within postoper ative two or three months except *** observ ation showed inflammation in the grafts with fibrinoid necroses,infiltration of a large amount of neutrophils and leukomonocytes,and the degree varied in different *** neointestine with wellformed structures was not observed in the ***:It is not suitable to use acellular dermal matrix alone as a scaffold for the intestinal elongation in animal models.

关键词： Acellular dermal matrix Intestine Elongation

Synthesis,chemical bonding and reactivity of new medium-sized polyarsenides

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Chinese Chemical Letters 2024年第7期35卷 497-501页

作者： xu-hui Yue Xiang-Wen Zhang hui-min He Lei Qiao Zhong-ming Sun State Key Laboratory of Element-Organic Chemistry Tianjin Key Lab for Institution Rare Earth Materials and ApplicationsSchool of Materials Science and EngineeringNankai UniversityTianjin 300350China Department of Physics Institute of Computational and Applied PhysicsTaiyuan Normal UniversityJinzhong 030619China

Gaining an understanding of the growth mechanism from single atoms to clusters and bulk materials continues to present a ***,it is important to explore the evolving trends of clusters in the structure and properties during the size *** this work,we report the synthesis and characterization of two medium-sized chain-like polyarsenic anions.[As_(21)]^(3-)represents a trimeric example of polyarsenic anion assembled through oxidative coupling of As_(7)^(3-)*** anion As_(18)^(4-)included in[As_(18)MO_(2)(CO)_(8)]^(4-)is regarded as formed by two realgar-type As_(8)subunits connected by a dinuclear AsAs *** As_(18)cluster was previously predicted by theory,and this is the first time successfully synthesized using wet chemistry ***,small-sized polyarsenides As_(2)^(2-)and As_(10)^(2-)were found in compound[K(18-crown-6)]_(3)[As_(10)]_(0.5)[As_(4){Mo(CO)_(3)}_(2)]_(0.5)·*** these,the former exhibits coordination with metal ***-crystal X-ray diffraction combined with quantum chemical calculations revealed the formation of double bonded As_(2)^(2-)stabilized by metal carbonyl *** work demonstrates a novel synthetic approach for the preparation of new polyarsenides and highlights their intriguing bonding characteristics,laying the foundation for the synthesis of such compounds and paving the way for their potential applications.

关键词： Polyarsenide Zintl anions Chain-like cluster DFT calculations AdNDP

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