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Research progress on the mechanism of improving peanut yield by single-seed precision sowing

Journal of Integrative Agriculture 2020年第8期19卷 1919-1927页

作者： ZHANG jia-lei geng Yun GUO Feng LI Xin-guo WAN Shu-bo Biotechnology Research Center Shandong Academy of Agricultural Sciences/Shandong Provincial Key Laboratory of Crop Genetic ImprovementEcology and PhysiologyJinan 250100P.R.China

The contradiction between the supply and demand of edible vegetable oil in China is prominent,and the self-sufficiency rate is less than 35%.Peanut has a very outstanding status in ensuring the security of edible oil and *** emphasis of increasing peanut yield should be the improvement of pod yield per unit area,because the total yield of peanut has not increased as *** is attributed to mainly two factors-low increase in the crop productivity and the competition for land for grain and cotton *** traditional double-seed sowing pattern,it is difficult to further increase the peanut yield due to the serious contradiction between populations and individuals and the declining population quality under high-yield ***-seed precision sowing was proven to be a new way to increase the economic coefficient(economic yield/biological yield)with the basic stability of the total biomass,which could make plants distribute evenly,reduce the competition among individuals and attain the full production potential of single *** order to reveal the mechanism of increasing peanut yield by single-seed precision sowing,the effects on the ontogenetic development(plant character,physiological characteristic and nutrient utilization)and population structure(population uniformity and photosynthesis,source-sink relationship and yield composition)were systematically *** study reports establishment of the high-yield cultivation technology system with the key technology of single-seed precision sowing and the supporting technology of fertilizing and *** anticipate its wider application for the improvement of peanut yield.

关键词： peanut single-seed precision sowing ontogenetic development population structure yield-increasing mechanism key technology

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Carboxymethylation of the polysaccharide from the fermentation broth of Marasmius androsaceus and its antidepressant mechanisms

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Food Science and Human Wellness 2023年第6期12卷 2417-2427页

作者： Yu Qiu Yan Su jia Song Fangming Mou jia Gou Xiaoqi geng Xinyue Li Zhiqiang Nie jianxin Wang Yu Zheng Min Wang State Key Laboratory of Food Nutrition and Safety Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process ControlCollege of BiotechnologyTianjin University of Science&TechnologyTianjin 300457China Key Laboratory of Chemical Biology and Molecular Engineering Ministry of EducationInstitute of BiotechnologyShanxi UniversityTaiyuan 030006China Wisconsin Center for NanoBioSystems School of PharmacyUniversity of Wisconsin-MadisonMadisonWI 53706USA Pharmaceutical Sciences Division School of PharmacyUniversity of Wisconsin-MadisonMadisonWI 53706USA

To investigate the structure-activity relationship of polysaccharide and obtain a better antidepressant polysaccharide,the antidepressant-like activity of a carboxymethyl polysaccharide(C-MEPS2)subjected to submerged fermentation was systematically ***12-H cell and Kunming mice were used to investigate the differences and their mechanism in the antidepressant effects of C-MEPS2 and *** experiments have showed that C-MEPS2 has a better antidepressant effect than MEPS2.C-MEPS2 could exert antidepressant effects related to catecholamine synthesis with specifi c sites of TH,D2DR,and *** addition,C-MEPS2 could repair the Res-induced damage in PC12-H cell,stabilize the mitochondrial membrane potential and regulate intracellular Ca^(2+) concentration,thus reducing cell apoptosis caused by *** common dosing experiments on animals further proved that CMEPS2 could signifi cantly improve the antidepressant effect of derivatives without affecting the antidepressant mechanism of *** is speculated that it may be related to carboxymethylated modifi cation.

关键词： Carboxymethyl polysaccharide Anti-depressant Catecholamine

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A 30-year retrospective study of rare ectopic seminal tract opening cases

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Asian Journal of Andrology 2020年第3期22卷 287-291页

作者： Hong-Fei Wu jia-geng Zhu jian-Zhong Lin Guang-Dong Shi jia-Qi Yu Wei-Zhang Xu Hong-Bo Yu Department of Urology Nanjing BenQ Hospital Affiliated to Nanjing Medical UniversityNanjing 210019China Department of Urology Nanjing First HospitalNanjing Medical UniversityNanjing 210006China Department of Urology Gaogang Hospital of Traditional Chinese MedicineTaizhou 225321China Fourth Clinical Institute Nanjing Medical UniversityNanjing 211166China Department of Urology Jiangsu Cancer Hospital and Jiangsu Institute of Cancer Research and Nanjing Medical University Affiliated Cancer HospitalNanjing 210019China

Ectopic seminal tract openi ng is a rare con genital *** rece ntly,there has been a lack of comprehensive reporting on the *** purpose of this retrospective study is to summarize the experience of diagnosis and treatment of this condition based on 28 clinical practice cases throughout the past 30 *** conducted auxiliary examinations on such patients including routine tests,imaging examinations,and *** these 28 cases,there were ectopic opening of vas deferens into enlarged prostatic utricles(6 cases);ejaculatory ducts into enlarged prostatic utricles,Mullerian ducts cysts,and urethras(18 cases,2 cases,and 1 case,respectively);and ectopic opening of the unilateral vas deferens and the contralateral ejaculatory duct into enlarged prostatic utricle(1 case).The size of the enlarged prostatic utricle,the type of ectopic seminal tract opening,and the opening's location effectively assisted in the selection of clinical treatment methods,including transurethral fenestration of the utricle,transurethral cold-knife incision,open operation,laparoscopic operation,and conservative *** effect was achieved during *** conclusion,a definite diagnosis and personalized treatment are especially important for patients with ectopic seminal tract opening.

关键词： congenital malformation ectopic opening ejaculatory duct enlarged prostatic utricle vas deferens

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Numerical investigation on damping coefficient of the integral squeeze film damper

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High Technology Letters 2022年第3期28卷 317-327页

作者： LI geng HE Lidong jia Xingyun ZHANG Yipeng WANG jian Engineering Research Center of Chemical Safety Ministry of Education Beijing University of Chemical TechnologyBeijing 100029P.R.China

The elimination of rotor vibration is usually achieved by applying additional damping to the *** film dampers are widely used in various aerospace and turbine *** research is carried out on flow characteristics in the integral squeeze film dampers(ISFDs).The dynamic response to the operation condition is investigated through the computational fluid dynamics(CFD) model of *** to the large pressure loss at the oil inlet,the oil film force only changes slightly with the increase of oil supply pressure,and the damping increases *** vibration amplitude only affects the film force,but has no effect on the *** oil film force and damping show an upward tendency with the decrease of thickness of the end seal clearance.

关键词： integral squeeze film damper(ISFD) numerical method oil film force damping coefficient

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Effect of Al on microstructure and mechanical properties of as-extruded Mg–1Mn alloy sheet

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Progress in Natural Science:Materials International 2020年第3期30卷 402-409页

作者： Shida Ma Aitao Tang Peng Peng geng Zhang Zhengwen Yu jia She Fusheng Pan Material Science and Engineering College Chongqing University School of Stomatology Zunyi Medical University National Engineering Research Center for Magnesium Alloy Chongqing University

The effect of Al addition on microstructure and mechanical properties of hot extruded Mg–1 Mn alloy sheet was investigated. The results revealed that the dynamic recrystallization was promoted by increasing Al content. The ultimate tensile strength and yield strength of the alloy increased with the increase of Al content. The Mg–9 Al–1 Mn alloy exhibited the highest strength, with tensile strength of 308 MPa, 307 MPa, 319 MPa, yield strength of 199 MPa, 207 MPa, 220 MPa and the elongation of 20.9%, 20.1%, 19.2% in 0°, 45°, 90°, *** high strength was mainly attributed to the formation of fine dynamically recrystallized grains and large amounts of the second phase. The strengthening mechanism of the alloys was explained.

关键词： Magnesium alloy Microstructure Mechanical properties Mg–Al–Mn

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Plasma-Assisted Dinitrogen Activation via Dual Platinum Cluster Catalysis:A Strategy for Ammonia Synthesis under Mild Conditions

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CCS Chemistry 2023年第3期5卷 682-694页

作者： Chaonan Cui Yuhan jia Hanyu Zhang Lijun geng Zhixun Luo Beijing National Laboratory for Molecular Sciences(BNLMS) State Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesInstitute of ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049

The activation and reduction of N_(2)to produce ammonia under mild conditions is of great interest,but challenges ***,we report a breakthrough in efficient dinitrogen cleavage by employing small Ptn+(n=1–4)clusters and convenient plasma *** reactivity of Pt3+is found to be substantially higher than that of other clusters,and the formed Pt3N7+shows prominent mass abundance among the odd-nitrogen *** illustrate that a chain reaction path within dual cluster cooperation,especially via a“3+2”mode,is beneficial to N≡N triple bond dissociation,embodying efficient synergistic catalysis.A key intermediate containing a bridged N_(2)of binding with two Pt clusters facilitates N_(2)activation with significantly enhanced interactions between the d orbitals of Pt and the antibondingπ*-orbitals of N_(2).Furthermore,by reacting the Pt_(n)N_(m)+clusters with H_(2),we observed hydrogenation products of both evenand odd-hydrogen species,indicative of ammonia *** in situ synthesized platinum nitride clusters,typically Pt_(3)N_(7)+,induce a highly active N site for hydrogen anchoring,enabling a cost-effective hydrotreating process for ammonia synthesis.

关键词： dual-metal cluster nitrogen activation ammonia synthesis platinum nitride clusters plasma-assistance

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Quality prediction of freshly-harvested wheat using Gluto Peak during postharvest maturation

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Grain & Oil Science and Technology 2021年第4期4卷 174-181页

作者： Mengyu Mu Ruidie geng Yuanyuan Yue Feng jia Xia Zhang Jinshui Wang College of Biological Engineering Henan University of TechnologyZhengzhou 450001China

Much recent researches have demonstrated that the quality of freshly-harvested wheat could be improved during postharvest maturation by determinating the rheological ***,this process is time-consuming and *** study aimed to provide a rapid and convenient method for predicting wheat quality during postharvest maturation by use of Gluto Peak *** and Extensograph were used to determine the rheological properties of four wheat samples(WT1,WT2,WT3,WT4)stored under different conditions(WT1:15℃,50%RH;WT2:20℃65%RH;WT3:28℃75%RH;WT4:35℃85%RH)for a total of 10 weeks,and Gluto Peak test was used to determine the gluten aggregation properties of the four *** analysis was also conducted between the rheological properties and the gluten aggregation *** of rheological properties showed that all Extensographic properties(dough extensibility,resistance,maximum resistance and area)of the four samples increased along with the storage time,and the Farinographic properties(water absorption,dough development time,dough stability time,and farinograph quality number(FQN))had the same tendency,indicating that the rheological properties were improved considerably with storage time *** Gluto Peak curves revealed that Peak Maximum Time(PMT),Brabender Equivalents Maximum(BEM)and Energy to Maximum Torque(En MT)of wheat flour of the four samples varied greatly,particularly the PMT and En MT of the samples WT3 and WT4 increased *** of correlation analysis showed that En MT had significant correlation with water absorption and area(P<0.05)for sample WT1,and also showed significant correlation with dough development time(P<0.05)for sample *** sample WT3,PMT was significantly correlated with the dough development time,extensibility,area(P<0.05),and FQN(P<0.01);and En MT was in significant correction with water absorption(P<0.01),and dough stability time,FQN,extensibility,maximum resistance and area(P<0.0

关键词： Wheat Postharvest maturation Rheological properties Gluten aggregation properties Glutopeak test Quality prediction

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Investigation of variable aperture on the performance and lifetime of ion thruster

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Plasma Science and Technology 2021年第10期23卷 11-21页

作者： Juanjuan Chen Yanhui jia Hai geng Ning Guo Dezhou Guo National Key Laboratory of Vacuum and Cryogenic Technology on Physics Lanzhou Institute of PhysicsLanzhou 730030People’s Republic of China

Beam flatness is an important parameter that determines the performance and the lifetime of a gridded ion *** improve the beam flatness of the 30 cm(LIPS-300)ion thruster,variable aperture ion optics that adapts to the decreasing ion density as the radius increases is *** is the ion optics that the screen grid surface is divided into several zones,where the aperture diameter in each zone is determined by the ion density and the electron temperature upstream of the screen *** beam current density in the central area is artificially reduced.A particle in cell-Monte Carlo collision model is applied in this work to investigating the effect of variable aperture on the perveance and the maximum beam current per aperture by simulating the extraction,focusing and acceleration processes of *** into account the engineering implementability,the screen grid surface is divided into four *** hole diameter in each zone is decreased from 1.95 mm to 1.8 mm,1.9 mm,1.8 mm and 1.7 mm,*** simulation results show that the maximum ion density in the center area of grid is decreased by10.6%and 6.99%,while it is increased by 6.49%and 22.3%in the edge region,*** beam flatness of the variable aperture ion optics is improved from 0.69 to *** erosion rate is decreased by 31.9%,but the total beam current is also decreased by 7.15%.The simulation results can provide a valuable reference of the development of the ion thruster.

关键词： ion thruster variable aperture PIC-MCC simulation

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两种肌少症小鼠模型的功能表型、肌肉质量及力量特点比较

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中国组织工程研究 2025年第14期29卷 2922-2929页

作者：江强于洁耿子翔王宁郭嘉杨光月王培歌赵咏芳上海中医药大学附属曙光医院石氏伤科医学中心上海市201203 上海市中医药研究院骨伤科研究所上海市201203

背景:地塞米松和后肢悬吊是常用的动物肌少症造模方法,具有造模时间短、操作简便、成本低等特点。目的:比较地塞米松和后肢悬吊诱导小鼠肌少症模型在肌肉质量、力量及功能表型以及分子机制表型方面的差异。方法:采用随机抽样法将30只C57... 详细信息

背景:地塞米松和后肢悬吊是常用的动物肌少症造模方法,具有造模时间短、操作简便、成本低等特点。目的:比较地塞米松和后肢悬吊诱导小鼠肌少症模型在肌肉质量、力量及功能表型以及分子机制表型方面的差异。方法:采用随机抽样法将30只C57BL/6小鼠随机分成3组,每组10只:正常对照组不进行任何干预;地塞米松组小鼠腹腔注射地塞米松磷酸钠溶液1 mg/(kg•d),连续注射6周,建立肌少症模型;后肢悬吊组采用鼠尾套悬吊小鼠后肢16 h,1次/d,连续悬吊6周,建立肌少症模型。造模6周内,监测小鼠体质量变化;造模6周后,检测小鼠四肢抓力、活动能力(游泳实验)、骨骼肌湿质量、骨骼肌病理形态,采用RT-PCR与Western blot检测骨骼肌蛋白质合成与分解代谢指标、AMPK/FoXO3α信号通路的表达。结果与结论:①从造模后第2周开始,地塞米松组、后肢悬吊组小鼠体质量均低于正常对照组(P<0.05)。②造模6周后,与正常对照组相比,造模两组小鼠四肢抓力均下降(P<0.05),腓肠肌湿质量、趾长伸肌湿质量、腓肠肌与比目鱼肌横截面积均下降(P<0.05);地塞米松组小鼠腓肠肌横截面积明显小于后肢悬吊组(P<0.05),比目鱼肌横截面积大于后肢悬吊组(P<0.05);与正常对照组、后肢悬吊组相比,地塞米松组小鼠活动能力降低(P<0.05)。③与正常对照组相比,造模两组PI3K、mTOR、AMPK、PGC-1αmRNA表达与p-AMPK/AMPK蛋白均降低(P<0.05),FoXO3αmRNA表达与PGC-1α、FoXO3蛋白表达均升高(P<0.05);地塞米松组Akt1 mRNA表达降低(P<0.05),Atrogin-1、MuRF-1 mRNA表达升高(P<0.05);后肢悬吊组Akt1 mRNA表达升高(P<0.05)。④与地塞米松组相比,后肢悬吊组mTOR、Akt1、FoXO3αmRNA表达升高(P<0.05),Atrogin-1、MuRF-1 mRNA表达降低(P<0.05)。⑤结果表明,两种造模方法均会导致骨骼肌线粒体能量代谢水平下降,地塞米松组通过泛素蛋白酶体和能量代谢途径的双重作用介导骨骼肌发生萎缩,后肢悬吊组通过AMPK/FoXO3α信号通路介导能量代谢途径引起骨骼肌发生萎缩,从而引起骨骼肌的质量、力量及功能下降。

关键词：肌少症小鼠模型肌肉蛋白质合成基因自噬溶酶体基因泛素蛋白酶体基因

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Diffusion mechanism simulation of cloud manufacturing complex network based on cooperative game theory

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Journal of Systems Engineering and Electronics 2018年第2期29卷 321-335页

作者： geng Chao QU Shiyou XIAO Yingying WANG Mei SHI Guoqiang LIN Tingyu XUE Junjie jia Zhengxuan Economics and Management School Harbin Institute of Technology at Weihai Beijing Complex Product Advanced Manufacturing Engineering Research Center Beijing Simulation Center State Key Laboratory of Intelligent Manufacturing System Technology Beijing Institute of Electronic System Engineering Science and Technology on Space System Simulation Laboratory Beijing Simulation Center

Cloud manufacturing is a specific implementation form of the "Internet + manufacturing" strategy. Why and how to develop cloud manufacturing platform(CMP), however, remains the key concern of both platform operators and users. A microscopic model is proposed to investigate advantages and diffusion forces of CMP through exploration of its diffusion process and mechanism. Specifically, a three-stage basic evolution process of CMP is innovatively proposed. Then, based on this basic process, a more complex CMP evolution model has been established in virtue of complex network theory, with five diffusion forces identified. Thereafter, simulations on CMP diffusion have been conducted. The results indicate that, CMP possesses better resource utilization,user satisfaction, and enterprise utility. Results of simulation on impacts of different diffusion forces show that both the time required for CMP to reach an equilibrium state and the final network size are affected simultaneously by the five diffusion forces. All these analyses indicate that CMP could create an open online cooperation environment and turns out to be an effective implementation of the "Internet + manufacturing" strategy.

关键词： complex network cloud manufacturing innovation diffusion network effect Gale-Shapley algorithm cooperative game theory

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