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Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 194-198 doi: 10.1007/s11709-011-0105-y
关键词: lining deficit leakage of water shield tunnel settlement soft deposit
YIELD AND FRUIT QUALITY OF ALMOND, PEACH AND PLUM UNDER REGULATED DEFICIT IRRIGATION
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 页码 583-593 doi: 10.15302/J-FASE -2020325
The effects of regulated deficit irrigation (RDI) on the performance of almond cv. Tuono, peach cv. JH-Hall and plum cv. Stanley were assessed on the Saiss Plain (NW, Morocco) over three consecutive growing seasons (2011–2013). Irrigation treatments consisted of a control, irrigation applied to fully satisfy crop water requirements (100% ETC), and two RDI treatments, irrigation applied to 75% ETC (RDI-75) and 50% ETC (RDI-50). These three treatments were applied during fruit-growth slowdown periods corresponding to Stages II and III in almond and Stage II in peach and plum. Yield and fruit quality traits were determined. The effect of RDI differed between species. Yield and fruit size were reduced significantly only in peach under RDI-50. Fruit quality improved in this species in the first year of the experiment, with an increase of sugar/acid ratio and polyphenol content. Plum quality also improved but the effects were significant only in the second and third years. Similar results were recorded in almond kernel, but their epidermal grooves were deeper under RDI-50, and this may have affected their commercial value. It is concluded that water can be saved during the fruit-growth slowdown period by up to 25% in peach and 50% in almond and plum with improvements in fruit quality without affecting total yield.
Damage on lining concrete in highway tunnels under combined sulfate and chloride attack
Rongrong YIN, Chenchen ZHANG, Qing WU, Baocheng LI, He XIE
《结构与土木工程前沿(英文)》 2018年 第12卷 第3期 页码 331-340 doi: 10.1007/s11709-017-0421-y
The combined effect from sulfate and chloride is one of the important reasons to cause the damage of lining concrete in highway tunnels. To investigate the effect of chloride ions on the corrosion of lining concretes under sulfate attack, ultrasonic detecting, compression test and X-ray Diffraction (XRD) were performed on the concretes to obtain the ultrasonic velocity, corrosion thickness, compression strength and corrosion products. The ultrasonic results, compression strength and XRD patterns confirmed that the existence of chloride certainly depressed the corrosion damage on the lining concretes under sulfate attack, and the depressing effect increased with the content of chloride in the composite solution. The corrosion damage on the concretes experienced three stages independent of the composition of corrosive solution: initial slower enhancement on the strength, stabilization period and linear degradation period. The existence of chloride mainly affected the final degradation stage and obviously decreased the corrosion thickness.
关键词: lining concrete sulfate chloride compression ultrasonic
YIELD AND FRUIT QUALITY OF ALMOND, PEACH AND PLUM UNDER REGULATED DEFICIT IRRIGATION
Rachid RAZOUK, Abdellah KAJJI, Anas HAMDANI, Jamal CHARAFI, Lahcen HSSAINI, Said BOUDA
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 页码 583-593 doi: 10.15302/J-FASE-2020325
关键词: fruit quality fruit yield Prunus domestica Prunus dulcis Prunus persica regulated deficit irrigation
温德华
《中国工程科学》 2012年 第14卷 第2期 页码 80-84
采用井筒内外井壁现场埋设传感器的方法,建立由计算机控制的自动监测系统,实测大屯矿区某混合井井壁施工过程及之后一段时间的受力和变形演变规律。对实测结果进行分析,研究内外井壁的综合变形规律,可以预测井壁的长期安全性,为井壁破裂的预防和治理提供科学决策的依据。
Deep convolutional neural network for multi-level non-invasive tunnel lining assessment
《结构与土木工程前沿(英文)》 2022年 第16卷 第2期 页码 214-223 doi: 10.1007/s11709-021-0800-2
关键词: concrete structure GPR damage classification convolutional neural network transfer learning
Nazim Abdul NARIMAN, Ayad Mohammad RAMADAN, Ilham Ibrahim MOHAMMAD
《结构与土木工程前沿(英文)》 2019年 第13卷 第6期 页码 1495-1509 doi: 10.1007/s11709-019-0574-y
关键词: ovaling deformation monte carlo sampling XFEM-BCQO maximum principal stress
Digital microfluidics: A promising technique for biochemical applications
He WANG, Liguo CHEN, Lining SUN
《机械工程前沿(英文)》 2017年 第12卷 第4期 页码 510-525 doi: 10.1007/s11465-017-0460-z
Digital microfluidics (DMF) is a versatile microfluidics technology that has significant application potential in the areas of automation and miniaturization. In DMF, discrete droplets containing samples and reagents are controlled to implement a series of operations via electrowetting-on-dielectric. This process works by applying electrical potentials to an array of electrodes coated with a hydrophobic dielectric layer. Unlike microchannels, DMF facilitates precise control over multiple reaction processes without using complex pump, microvalve, and tubing networks. DMF also presents other distinct features, such as portability, less sample consumption, shorter chemical reaction time, flexibility, and easier combination with other technology types. Due to its unique advantages, DMF has been applied to a broad range of fields (e.g., chemistry, biology, medicine, and environment). This study reviews the basic principles of droplet actuation, configuration design, and fabrication of the DMF device, as well as discusses the latest progress in DMF from the biochemistry perspective.
关键词: digital microfluidics electrowetting on dielectric discrete droplet biochemistry
杨昀,张和平,刘激扬
《中国工程科学》 2003年 第5卷 第4期 页码 55-60
标准房间/墙角火实验是一种全尺度火灾实验研究方法,主要用来研究室内装饰材料的火灾特性。介绍了ISO 9705房间/墙角火实验方法的原理和实验装置,以及国内外利用该方法对装饰材料火灾特性进行研究的进展情况,包括对材料热释放速率、烟气产生和室内火蔓延方面的研究。分析了其研究成果在室内装饰材料的分类及火灾危险性评估中的实际应用情况,并结合作者目前的工作对未来的研究内容做了一些展望。
荣传新,王秀喜,程桦
《中国工程科学》 2005年 第7卷 第7期 页码 43-49
对高强钢筋混凝土预制弧板井壁结构的研究表明,实验结果与数值计算结果基本一致。高强钢筋混凝土预制弧板井壁结构具有很高的承载能力,影响其承载能力的主要因素依次为混凝土的强度等级、厚径比和配筋率。在均布荷载作用下,混凝土的强度等级提高10MPa,极限承载力提高1.26MPa。厚径比每增加1%,极限承载力增加0.85 MPa。增大配筋率对提高其极限承载力作用不大,配筋率增大3倍,极限承载力只增加了0.1MPa。
关键词: 高强钢筋混凝土预制弧板井壁 力学特性 有限元法 ANSYS
Ling Wang, Lining Wang, Xing Fan, Wei Tang, Jiong Hu
《医学前沿(英文)》 2021年 第15卷 第1期 页码 108-115 doi: 10.1007/s11684-019-0730-8
关键词: post-transplantation cyclophosphamide allogeneic hematopoietic stem cell transplantation lymphoid malignancies
何川,封坤,晏启祥,齐春
《中国工程科学》 2012年 第14卷 第10期 页码 65-72
针对我国第一条水下铁路盾构法隧道——狮子洋隧道,采用“多功能盾构隧道结构体试验系统”装置原型管片衬砌结构,在通缝和错缝不同的拼装方式下进行了原型结构加载试验,对其结构力学性能进行深入探讨。试验结果表明,不同水压条件下管片衬砌结构力学特征不同,尤其是当结构开裂后,高水压对于结构内力与形变的发展有明显的减缓作用。狮子洋隧道采用的榫式接头管片结构在通缝与错缝拼装下的破坏特征不同,通缝拼装时结构在高水压条件下纵缝附近区域易发生局部剪切破坏,该研究成果可为同类工程的设计提供有价值的参考。
Zinc homeostasis in the metabolic syndrome and diabetes
null
《医学前沿(英文)》 2013年 第7卷 第1期 页码 31-52 doi: 10.1007/s11684-013-0251-9
Zinc (Zn) is an essential mineral that is required for various cellular functions. Zn dyshomeostasis always is related to certain disorders such as metabolic syndrome, diabetes and diabetic complications. The associations of Zn with metabolic syndrome, diabetes and diabetic complications, thus, stem from the multiple roles of Zn: (1) a constructive component of many important enzymes or proteins, (2) a requirement for insulin storage and secretion, (3) a direct or indirect antioxidant action, and (4) an insulin-like action. However, whether there is a clear cause-and-effect relationship of Zn with metabolic syndrome, diabetes, or diabetic complications remains unclear. In fact, it is known that Zn deficiency is a common phenomenon in diabetic patients. Chronic low intake of Zn was associated with the increased risk of diabetes and diabetes also impairs Zn metabolism. Theoretically Zn supplementation should prevent the metabolic syndrome, diabetes, and diabetic complications; however, limited available data are not always supportive of the above notion. Therefore, this review has tried to summarize these pieces of available information, possible mechanisms by which Zn prevents the metabolic syndrome, diabetes, and diabetic complications. In the final part, what are the current issues for Zn supplementation were also discussed.
关键词: zinc zinc transporters metallothionein diabetes diabetic complications insulin resistance antioxidant
李英能
《中国工程科学》 2012年 第14卷 第3期 页码 41-45
以降水利用和灌溉程度为依据,对半旱地农业进行了研究,着重讨论了与半旱地农业涵义有关的问题,论述了在北方缺水地区发展半旱地农业的意义,给出了半旱地农业有限补灌技术模式。针对北方缺水地区的特点,提出了不同类型区半旱地农业有限补灌发展模式,并探讨了北方缺水地区半旱地农业发展有限补灌的策略。
Growth and abscisic acid responses of
Yue LI, Liqiang WAN, Yufei WANG, Xianglin LI
《农业科学与工程前沿(英文)》 2018年 第5卷 第1期 页码 80-86 doi: 10.15302/J-FASE-2017199
关键词: abscisic acid alfalfa drought response growth stage water deficit
标题 作者 时间 类型 操作
Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit of Shanghai
Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI
期刊论文
Damage on lining concrete in highway tunnels under combined sulfate and chloride attack
Rongrong YIN, Chenchen ZHANG, Qing WU, Baocheng LI, He XIE
期刊论文
YIELD AND FRUIT QUALITY OF ALMOND, PEACH AND PLUM UNDER REGULATED DEFICIT IRRIGATION
Rachid RAZOUK, Abdellah KAJJI, Anas HAMDANI, Jamal CHARAFI, Lahcen HSSAINI, Said BOUDA
期刊论文
Application of coupled XFEM-BCQO in the structural optimization of a circular tunnel lining subjected
Nazim Abdul NARIMAN, Ayad Mohammad RAMADAN, Ilham Ibrahim MOHAMMAD
期刊论文
Digital microfluidics: A promising technique for biochemical applications
He WANG, Liguo CHEN, Lining SUN
期刊论文
Fludarabine and intravenous busulfan conditioning with post-transplantation cyclophosphamide for allogeneic peripheral stem cell transplantation for adult patients with lymphoid malignancies: a prospective single-arm phase II study
Ling Wang, Lining Wang, Xing Fan, Wei Tang, Jiong Hu
期刊论文