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《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1494-1503 doi: 10.1007/s11709-021-0768-y
关键词: bearing capacity soil-rock interface Hoek−Brown yield criterion plasticity limit analysis
Shuvankar DAS; Debarghya CHAKRABORTY
《结构与土木工程前沿(英文)》 2022年 第16卷 第8期 页码 1040-1055 doi: 10.1007/s11709-022-0841-1
关键词: undercut vertical escarpment stability Hoek-Brown yield criterion PCP
Role of brown adipose tissue in metabolic syndrome, aging, and cancer cachexia
null
《医学前沿(英文)》 2018年 第12卷 第2期 页码 130-138 doi: 10.1007/s11684-017-0555-2
Brown adipose tissue (BAT) plays a fundamental role in maintaining body temperature by producing heat. BAT that had been know to exist only in mammals and the human neonate has received great attention for the treatment of obesity and diabetes due to its important function in energy metabolism, ever since it is recently reported that human adults have functional BAT. In addition, beige adipocytes, brown adipocytes in white adipose tissue (WAT), have also been shown to take part in whole body metabolism. Multiple lines of evidence demonstrated that transplantation or activation of BAT or/and beige adipocytes reversed obesity and improved insulin sensitivity. Furthermore, many genes involved in BAT activation and/or the recruitment of beige cells have been found, thereby providing new promising strategies for future clinical application of BAT activation to treat obesity and metabolic diseases. This review focuses on recent advances of BAT function in the metabolic aspect and the relationship between BAT and cancer cachexia, a pathological process accompanied with decreased body weight and increased energy expenditure in cancer patients. The underlying possible mechanisms to reduce BAT mass and its activity in the elderly are also discussed.
关键词: brown adipose tissue beige adipocyte anti-obesity anti-diabetes cancer cachexia aging
Deformation control criterion of shield tunnel under lateral relaxation of soft soil
《结构与土木工程前沿(英文)》 2023年 第17卷 第5期 页码 780-795 doi: 10.1007/s11709-023-0944-3
关键词: shield tunnel lateral relaxation of soil deformation control criterion of segment structure model test
Nicholas Brown, John Dawson, Ryan Ruddick
《工程(英文)》 2020年 第6卷 第8期 页码 857-859 doi: 10.1016/j.eng.2020.07.012
Elasto-plastic fatigue crack growth analysis of plane problems in the presence of flaws using XFEM
Sachin KUMAR,A. S. SHEDBALE,I. V. SINGH,B. K. MISHRA
《结构与土木工程前沿(英文)》 2015年 第9卷 第4期 页码 420-440 doi: 10.1007/s11709-015-0305-y
关键词: XFEM von-Mises yield criterion isotropic hardening fatigue crack growth J-integral
Brown and beige fat: the metabolic function, induction, and therapeutic potential
null
《医学前沿(英文)》 2015年 第9卷 第2期 页码 162-172 doi: 10.1007/s11684-015-0382-2
Adipose tissue is an important organ for energy homeostasis. White adipose tissue stores energy in the form of triglycerides, whereas brown adipocytes and recently identified beige adipocytes are specialized in dissipating energy by thermogenesis or contribution to dispose glucose and clear triglycerides in blood. The inverse correlation between the brown adipose tissue activity and body mass suggests its protective role against body fat accumulation. Thus, recruitment and activation of brown or beige adipose tissue become particularly appealing targets for increasing energy expenditure. Angiogenesis and sympathetic nerve signals are the fundamental determinants for brown and beige adipose tissue development, as well as for their metabolic functions. Secretary factors including BMPs can induce the development, the activation of brown or beige adipose tissue, which seem to be promising for therapeutic development.
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 doi: 10.15302/J-FASE -2020355
Agriculture faces the dual challenges of food security and environmental sustainability. Here, we investigate current maize production at the field scale, analyze the yield gaps and impacting factors, and recommend measures for sustainably closing yield gaps. An experiment was conducted on a 3.9-ha maize seed production field in arid north-western China, managed with border and drip irrigation, respectively, in 2015 and 2016. The relative yield reached 70% in both years. However, drip irrigation saved 227 mm irrigation water during a drier growing season compared with traditional border irrigation, accounting for 44% of the maize evapotranspiration (ET). Yield variability under drip irrigation was 12.1%, lower than the 18.8% under border irrigation. Boundary line analysis indicates that a relative yield increase of 8% to 10% might be obtained by optimizing the yield-limiting factors. Plant density and soil available water content and available nitrogen were the three major factors involved. In conclusion, closing yield gaps with agricultural sustainability may be realized by optimizing agronomic, irrigation and fertilizer management, using water-saving irrigation methods and using site-specific management.
关键词: boundary line analysis irrigation method precision agriculture spatial variability yield gaps yield-limiting factors
Experimental research on ductile fracture criterion in metal forming
Song YU, Weiming FENG
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 308-311 doi: 10.1007/s11465-011-0233-z
Ductile fracture criterion is key limitation parameter in material forming. Accuracy predicting surface and internal failure in plastic deformation process affects on the technology design of workpiece and die greatly. Tension, compression, torsion and shearing test on 45# steel are utilized for providing the experimental values of the critical values at fracture, and 11 widely used ductile fracture criterion are selected to simulate the physical experiments and their relative accuracy for predicting and quantifying fracture initiation sites are investigated. The comparing results show that metal forming process under high triaxiality can be estimated successively using both Normalized Cockcroft-latham and the Brozzo ductile fracture criteria, but the Ayada and general Rice-Tracey model work very well for the low triaxiality cases.
关键词: ductile fracture criteria metal forming process material experiment stress triaxiality
A new fracture criterion for peridynamic and dual-horizon peridynamics
Jinhai ZHAO, Hesheng TANG, Songtao XUE
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 629-641 doi: 10.1007/s11709-017-0447-1
关键词: Castigliano’s theorem breaking energy critical extension XFEM COD PD-COD
The effect of conservation tillage on crop yield in China
Hongwen LI,Jin HE,Huanwen GAO,Ying CHEN,Zhiqiang ZHANG
《农业科学与工程前沿(英文)》 2015年 第2卷 第2期 页码 179-185 doi: 10.15302/J-FASE-2015058
关键词: conservation tillage crop yield soil structure development strategies
Breeding strategies for increasing yield potential in super hybrid rice
Shihua CHENG,Xiaodeng ZHAN,Liyong CAO
《农业科学与工程前沿(英文)》 2015年 第2卷 第4期 页码 277-282 doi: 10.15302/J-FASE-2015081
Highlight yield forming and innovative technologies in tropical crops
Wenquan WANG
《农业科学与工程前沿(英文)》 2016年 第3卷 第4期 页码 283-284 doi: 10.15302/J-FASE-2016128
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.
标题 作者 时间 类型 操作
Effect of interface adhesion factor on the bearing capacity of strip footing placed on cohesive soil overlying rock mass
期刊论文
Effect of undercut on the lower bound stability of vertical rock escarpment using finite element and power cone programming
Shuvankar DAS; Debarghya CHAKRABORTY
期刊论文
Elasto-plastic fatigue crack growth analysis of plane problems in the presence of flaws using XFEM
Sachin KUMAR,A. S. SHEDBALE,I. V. SINGH,B. K. MISHRA
期刊论文
PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL
期刊论文
A new fracture criterion for peridynamic and dual-horizon peridynamics
Jinhai ZHAO, Hesheng TANG, Songtao XUE
期刊论文
The effect of conservation tillage on crop yield in China
Hongwen LI,Jin HE,Huanwen GAO,Ying CHEN,Zhiqiang ZHANG
期刊论文
Breeding strategies for increasing yield potential in super hybrid rice
Shihua CHENG,Xiaodeng ZHAN,Liyong CAO
期刊论文