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第十五届粳稻发展论坛之17'全国优良食味粳稻品评结果报告

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北方水稻 2017年第4期47卷 1-5页

作者：孙雅君贾东宋双王丹李明于亚辉辽宁省盐碱地利用研究所辽宁盘锦124010

北方稻作协会组织24位专业品评员,对来自我国粳稻产区的28个粳稻品种(品系)进行品评,评选出特等奖1个、一等奖6个、二等奖8个、三等奖6个,优秀奖7个。从品评结果分析来看,参评粳稻品种(品系)整体食味水平普遍较高,表明我国优良食味粳稻... 详细信息

北方稻作协会组织24位专业品评员,对来自我国粳稻产区的28个粳稻品种(品系)进行品评,评选出特等奖1个、一等奖6个、二等奖8个、三等奖6个,优秀奖7个。从品评结果分析来看,参评粳稻品种(品系)整体食味水平普遍较高,表明我国优良食味粳稻研究成果显著。同时,专业品评员能够科学、公正、可靠地评价粳稻食味,品评结果得到参评单位的一致认可,所以应大力加强品评员队伍建设,以促进我国优良食味水稻的快速发展。

关键词：全国粳稻食味品评结果显著

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气浮技术控制影响因素的探讨

江西科学 2006年第1期24卷 47-50页

作者：李都望詹健黄晓东贾俊松南昌大学土木工程学院江西南昌330029 深圳水务集团广东深圳518057

通过分析大量的气浮试验研究,阐述了气浮工艺的各种控制影响因素。结果表明气浮工艺有其适用范围,各地在使用气浮工艺前应该视具体情况,通过试验研究来指导生产,不能盲目使用。

关键词：溶气气浮藻停留时间气泡

Occurrence of Glyphosate-Resistant Horseweed (Conyza canadensis) Population in China

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Agricultural Sciences in China 2011年第7期10卷 1049-1055页

作者： song Xiao-ling WU jia-jun ZHANG Hong-jun QIANG Sheng Weed Research Laboratory Nanjing Agricultural University Nanjing 210095 P.R.China Institute for the Control of Agrochemicals Ministry of Agriculture （CAMA） Beijing 100026 P.R.China

Horseweed （Conyza canadensis）, an invasive alien weed, is one of the main weeds in orchards in China. Although glyphosate has been used for control of horseweed and many other weeds in orchards for more than 25 years in China, a case of glyphosate-resistant horseweed has not been identified in orchard in China so far despite glyphosate-resistant horseweed cases have been reported in some other countries. Seeds of 25 horseweed populations were collected from different orchards with different glyphosate application history. Potted seedlings with 11-13-leaf growth stage were treated with glyphosate at 0.035, 0.07, 0.14, 0.28, 0.56, 1.12, 2.24, 4.48, and 8.96 kg a.i. ha-1. The dosage dependence response curve of each population was constructed with Log-logistic dose response regression equations. The ED50 value of each population was calculated and compared with the susceptible population from China. Different populations had different relative glyphosate-resistant levels which increased with the number of years of glyphosate application. Two populations with the highest resistance levels, 8.28 and 7.95 times, were found in Ningbo, Zhejiang Province, China, where glyphosate was used for weed control in orchards twice each year for 15 yr. The two resistant populations accumulated approximately two to four times less shikimic acid than the two susceptible populations 48 h after glyphosate application.

关键词： horseweed [Conyza canadensis (L.) Cronq.] glyphosate resistance shikimic acid

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干细胞的趋电性迁移及机制

中国组织工程研究 2025年第23期29卷 4984-4992页

作者：韩芳舒晴贾绍辉田峻武汉体育学院运动医学院湖北省武汉市430079 武汉大学中南医院骨科康复科湖北省武汉市430071

背景:随着对干细胞技术研究的深入,如何使其准确归巢成为临床应用中的一大难题。除药物和趋化因子等信号的诱导外,电场也被广泛应用于指导干细胞的定向迁移,并可增强其迁移速度和定向性。目的:旨在分析总结电场对干细胞迁移特性的影响,... 详细信息

背景:随着对干细胞技术研究的深入,如何使其准确归巢成为临床应用中的一大难题。除药物和趋化因子等信号的诱导外,电场也被广泛应用于指导干细胞的定向迁移,并可增强其迁移速度和定向性。目的:旨在分析总结电场对干细胞迁移特性的影响,同时综述可能的作用机制。方法:通过检索Pub Med和中国知网数据库,收集截至2024年3月的相关文献,英文检索词:“stem cells,direct current electric field,pulsed electric field,migration,electric field device,mechanism”;中文检索词:“干细胞,直流电场,脉冲电场,迁移,电场装置,机制”。排除不能获取全文和与主题无关的文献。结果与结论:根据筛选要求共纳入58篇文献,包括中文文献15篇及英文文献43篇。文献以脂肪间充质干细胞、骨髓间充质干细胞、神经干细胞、表皮干细胞、人胚胎干细胞和人诱导性多功能干细胞为研究对象,在迁移装置中研究电场的不同参数对上述干细胞迁移的影响及其机制。(1)电场作为一种简单、无创且稳定的干预方式在指导干细胞定向迁移的过程中起着积极作用;(2)不同类型的干细胞发生趋电性迁移的方向不同,同时大部分干细胞的迁移速度和定向性是随着电场强度增加而增加的;(3)不同的电场装置在观测干细胞迁移时的侧重点不同,可根据实验目的而择优选择相关装置;(4)不同干细胞趋电性迁移的机制不完全相同,多数干细胞迁移过程中有MAPK通路、ROCK活化以及PI3K功能的参与,同时还有其他蛋白质复合物与信号通路参与调控该过程;(5)除电场参数不同之外,细胞本身的衰老情况和培养环境也会对趋电性迁移的结果产生影响。总而言之,电场作为一种影响干细胞迁移特性的重要信号,与其他新兴材料结合在组织工程应用中展现出了一定的潜力,有望在指导干细胞归巢方面发挥更加重要的作用,促进骨组织再生和修复以及神经系统、自身免疫系统以及肿瘤等疾病的研究取得更大的突破。

关键词：干细胞电场趋电性迁移机制归巢效应物理因子电场装置细胞衰老培养环境

MRI insight on multiphase flow in hydrate-bearing sediment and development mechanism of hydrate seal

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Petroleum Science 2023年第6期20卷 3854-3864页

作者： Guo-jun Zhao Ming-jun Yang Xin Lv jia-Nan Zheng Yong-Chen song Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian University of TechnologyDalian 116024LiaoningChina CNOOC Research Institute Co.Ltd Beijing100027China Shanghai Institute for Advanced Study Zhejiang UniversityShanghai201203China

Gas and water migration through the hydrate-bearing sediment are characteristic features in marine gas hydrate reservoirs ***,there are few experimental investigations on the effect of water-gas flow on the gas hydrate *** this study,gas-water migration in gas hydrate stability zone(GHSZ)was investigated visually employing a high-resolution magnetic resonance imaging(MRI)apparatus,and the formation of hydrate seal was experimentally *** revealed that normal flow of gas-water at the low flow rate of 1–0.25 mL/min will induce the hydrate ***,higher gas-water flow rates(at 2–0.5 and 4–1 mL/min)need higher reservoir pressure to induce the hydrate *** addition,the hydrate reformation during the gas-water flow process produced the hydrate seal,which can withstand an over 9.0 MPa *** high overpressure provides the development condition for the underlying gas and/or water reservoir.A composite MRI image of the whole hydrate seal was obtained through the *** pore difference between hydrate zone and coexistence zone produces a capillary sealing effect for hydrate *** hydrate saturation of hydrate seal was more than 51.6%,and the water saturation was more than 19.3%.However,the hydrate seal can be broken through when the overpressure exceeded the capillary pressure of the hydrate seal,which induced the sudden drop of reservoir *** study provides a scientific explanation for the existence of high-pressure underlying gas below the hydrate layer and is significant for the safe exploitation of these common typical marine hydrate reservoirs.

关键词： Gas hydrate Gas-water migration Underlying gas Hydrate seal Pore difference MRI

Exit options sustain altruistic punishment and decrease the second-order free-riders, but it is not a panacea

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Science China(Information Sciences) 2025年第1期 278-291页

作者： Chen SHEN Zhao song Lei SHI jun TANIMOTO Zhen WANG Faculty of Engineering Sciences Kyushu University School of Statistics and Mathematics Yunnan University of Finance and Economics School of Computing Engineering and Digital Technologies Teesside University School of Artificial Intelligence OPtics and Electro Nics (iOPEN) Northwestern Polytechnical University

Why do humans punish free riders at their own expense? This behavior represents an evolutionary puzzle in human societies. This study explores the role of exit strategies in fostering altruistic punishment within evolutionary game theory. We extend the traditional prisoner's dilemma model by incorporating exiters, players who opt out for a small payoff while nullifying their opponent's payoff, and altruistic punishers who cooperate and punish non-cooperators. Our findings indicate that in well-mixed populations, exiters destabilize defection but do not promote altruistic punishment. In social networks, however,exiters enable altruistic punishment via cyclic dominance among altruistic punishers, defectors, and exiters. Notably, this cyclic dominance is sensitive to exit payoffs; adjustments can lead to cyclic dominance of non-punishing cooperators, defectors, and exiters, or to a bi-stable state between these two types of cyclic dominance. These results highlight the nuanced impact of exiters on altruistic punishment, emphasizing the need for careful incentivization of exit behavior. While exiters can support altruistic punishment in networked populations, their effectiveness is not a panacea and is highly sensitive to exit payoffs, indicating limits to the voluntary participation mechanism.

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Integrating lipidomics and gut microbiota to study the anti-hyperlipidemia effect of Sargentodoxae Caulis extract

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Traditional Medicine Research 2025年第1期10卷 1-11页

作者： Xiao-Xiao Zhang Li jia Xiu-jun Zhan Charity Ngina Qing-Rui Zhang Xiao-Ge Li Qi-Bao jiang Shi Bai Miao-Miao jiang National Key Laboratory of Chinese Medicine Modernization Tianjin University of Traditional Chinese MedicineTianjin 301617China Haihe Laboratory of Modern Chinese Medicine Tianjin 301617China School of Medicine Taizhou UniversityTaizhou 318000China.

Background:Sargentodoxae Caulis(SC)is the vine stem of Sargentodoxa Cuneata(Oliv.)Rehd.&*** in ***,and it in traditional Chinese medicine has been known for promoting blood circulation and removing blood stasis as recorded in the ancient book“Illustrated Classics of Materia Medica”.It has been used effectively to treat blood stasis too in modern clinical ***,the anti-hyperlipidemia effect of SC is not fully *** paper aims at exploring the use of SC stems to improve the balance of blood lipids in the body,and its new role in treating ***:The effects of SC extract on hyperlipidemia were explored by combining lipidomics and gut ***,we explored the potential mechanism of SC in treating hyperlipidemia by pathway ***:The results showed that the stem extract of SC could restore the physiological and biochemical indices of hyperlipidemia in mice,as well as repair the morphological and structural damage to *** to the Model group,the SC extract significantly reduced the liver index,epididymal fat index,and Lee’s *** also significantly decreased serum levels of total cholesterol,triglycerides,low-density lipoprotein cholesterol,peroxisome proliferator-activated receptor gamma(PPAR-γ),D-lactate,and free fatty acids,while significantly increasing the relative content of peroxisome proliferator-activated receptor alpha(PPAR-α).These changes were statistically ***-targeted lipidomics,based on LC-MS,were utilized to investigate the lipid metabolism characteristics in serum,liver,and epididymal fat of the *** was observed that,compared to the blank group,the Model group exhibited significant changes primarily in glycerol lipids and *** treatment group also displayed alterations in these lipids.A total of 38,81,and 27 differential lipids were identified in serum,liver,and epididymal fat samples,*** these,14 common differenti

关键词： hyperlipidemia Sargentodoxae Caulis lipidomics intestinal flora

Drift analysis of MH370 debris in the southern Indian Ocean

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Frontiers of Earth Science 2018年第3期12卷 468-480页

作者： jia GAO Lin MU Xianwen BAO jun song Yang DING College of Oceanic and Atmospheric Sciences Ocean University of China Qingdao 266100 China National Marine Data and Information Service Tianjin 300171 China College of Marine Science and Technology China University of Geosciences Wuhan 430074 China School of Marine Science and Environment Engineering Dalian Ocean University Dalian 116023 China

Malaysian Airlines Flight MH370 disappeared on 8 March 2014, while flying from Kuala Lumpur to Beijing. A flaperon from the flight was found on Reunion Island in July 2015. Two more confirmed pieces of debris were found in Mauritius and Tanzania, and 19 unconfirmed items were found off Mozambique, South Africa, and Madagascar. Drift buoys originating from the designated underwater search area arrived in Reunion Island, Mauritius, and Tanzania. Some of these buoys took a similarly long time as did real debris to reach these destinations, following a heading northeast and then west. For the present study, a maritime object drift prediction model was developed. ＂High resolution surface currents, Stokes drift, and winds＂ were processed, and a series of model experiments were constructed. The predicted trajectories of the modeled objects were similar to the observed trajectories of the drift buoys. Many modeled objects drifted northward then westward, ending up in Reunion Island, Mauritius, and Tanzania with probabilities of 5%0, 5%0, and 19%o, respectively. At the end of the simulation, most objects were located near 10~S in the western Indian Ocean. There were significant differences between experiments with different leeway factors, possibly because of the influence of southeast trade winds. The north part of the underwater search area is most likely to be the crash site, because the predicted trajectories of objects originating here are consistent with the many pieces of debris found along the east coast of Africa and the absence of such findings on the west coast of Australia.

关键词： MH370 debris drift trajectory drift buoys surface currents Stokes drift

肌肉负荷对股骨干骨折早期愈合生物力学影响的有限元分析

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中国组织工程研究 2025年第21期29卷 4413-4420页

作者：程超然张峻霞贾军天津科技大学机械工程学院天津市300222 天津市轻工与食品工程机械装备集成设计与在线监控重点实验室天津科技大学天津市300222 天津市天津医院骨科天津市300200

背景:以往的研究多通过忽略肌肉负荷和采用简化股骨负荷的方式,进行骨折早期愈合的生物力学分析。然而,肌肉负荷对骨折早期愈合产生的生物力学影响尚不清楚。目的:构建不同的股骨负荷模型,研究肌肉负荷对骨折愈合的生物力学影响,帮助临... 详细信息

背景:以往的研究多通过忽略肌肉负荷和采用简化股骨负荷的方式,进行骨折早期愈合的生物力学分析。然而,肌肉负荷对骨折早期愈合产生的生物力学影响尚不清楚。目的:构建不同的股骨负荷模型,研究肌肉负荷对骨折愈合的生物力学影响,帮助临床医生更好地理解骨折愈合的生物力学过程,优化治疗方案。方法:利用AnyBody Modeling System软件构建个性化的人体肌肉骨骼系统,通过仿真分析以获取体内的肌肉骨骼负荷模型。该模型和采用改进简化负荷方法、简化负荷方法构建的股骨负荷模型,分别作为有限元输入的边界条件,对站立状态下锁定加压钢板应力应变、骨折块应变进行分析。结果与结论:(1)与简化负荷方法相比,肌肉骨骼方法得到的锁定加压钢板应力、应变和骨折块应变分别小了31.9%;38.9%和19.5%;(2)肌肉骨骼方法与改进简化负荷方法对比发现,忽略肌肉负荷则会造成锁定加压钢板的应力、应变和骨折块应变分别高估16.8%,14.3%和19.5%,肌肉负荷对骨折块的剪切运动大小无明显影响,而对运动方向有明显的影响;(3)结果表明,简化股骨负荷和忽略肌肉负荷的方法与肌骨骨骼负荷情况存在一定的偏差,因此,在研究骨折愈合时需考虑肌肉负荷的生物力学影响。

关键词：肌肉负荷骨折愈合锁定加压钢板骨折块应变有限元分析