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新型包装材料对3种储粮害虫幼虫防治效果研究

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粮油食品科技 2024年第3期32卷 195-200页

作者：张袁泉吕建华白春启韩志强张峰陈金身河南工业大学粮食和物资储备学院粮食储藏安全河南省协同创新中心河南郑州450001 中山市粮食储备经营管理有限公司广东中山528447

为明确不同包装材料对常见储粮害虫的防虫效果,在27~29℃、70%~80%RH条件下,研究了经平行和垂直两种穿透方式处理不同时间后,3种储粮幼害虫(赤拟谷盗、杂拟谷盗、烟草甲)对7种有不同浓度溴氰菊酯的高密度聚乙烯薄膜的钻蛀情况和试虫存... 详细信息

为明确不同包装材料对常见储粮害虫的防虫效果,在27~29℃、70%~80%RH条件下,研究了经平行和垂直两种穿透方式处理不同时间后,3种储粮幼害虫(赤拟谷盗、杂拟谷盗、烟草甲)对7种有不同浓度溴氰菊酯的高密度聚乙烯薄膜的钻蛀情况和试虫存活情况。研究结果表明,参试薄膜都有一定的防虫能力,但对不同种类害虫的防虫能力不同。处理9 d后,6种含有药剂的新型薄膜的防虫能力均高于空白对照薄膜,其中1%A(含质量分数5%溴氰菊酯的高密度聚乙烯颗粒)薄膜、3%A薄膜、1%B(含质量分数5%溴氰菊酯和质量分数2%的增效醚的高密度聚乙烯颗粒)薄膜和3%B薄膜在两种穿透方式下对3种试虫的抗穿透率均为100%。3种幼虫的存活率均随处理时间延长而降低。平行穿透处理9 d后,3%B薄膜上3种试虫的存活率显著低于其他薄膜,其中烟草甲幼虫存活率最低可降至10%。从总体来看,3%B薄膜的防虫效果最佳。

关键词：储粮害虫防虫包装幼虫钻蛀包装材料

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间苯型不饱和聚酯树脂改性沥青桥面铺装研究

浙江交通职业技术学院学报 2024年第2期25卷 17-25页

作者：陈建群吕建伟孙锦林韩飞飞杭州市公路与港航管理服务中心杭州310014 长安大学教育部特殊地区公路工程重点实验室西安710064

为提高桥面铺装层的抗裂性,同时减少坑槽等水损害病害的发生,本文开发了一种不饱和聚酯树脂(以下英文简称UP)改性沥青桥面铺装材料,并对其配比和性能进行研究。通过粘度、动态剪切流变(DSR)和拉伸试验确定最佳UP改性沥青材料配比,对改... 详细信息

为提高桥面铺装层的抗裂性,同时减少坑槽等水损害病害的发生,本文开发了一种不饱和聚酯树脂(以下英文简称UP)改性沥青桥面铺装材料,并对其配比和性能进行研究。通过粘度、动态剪切流变(DSR)和拉伸试验确定最佳UP改性沥青材料配比,对改性沥青流变性能和拉伸性能进行测试,并对UP改性沥青桥面铺装材料进行路用性能对比评估。研究结果表明,UP改性沥青具有良好的高温流变性,明显优于SBS改性沥青,且UP改性沥青与环氧改性沥青相比,具有更好的柔韧性,且价格便宜,其成本仅为环氧沥青的57%。此外,经测试,UP改性沥青桥面铺装材料的抗拉性能、高温稳定性也明显优于SBS改性沥青混合料,且与环氧沥青混合料相比,具有更好的低温抗裂性与水稳定性。

关键词：桥面铺装不饱和聚酯树脂改性沥青沥青混合料路用性能

Modification strategies of Li_(7)La_(3)Zr_(2)O_(12) ceramic electrolyte for high-performance solid-state batteries

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Tungsten 2021年第3期3卷 260-278页

作者： jian-Shuai lv Shao-Ke Guo Yan-Bing He Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China

Enormous research focusing on solid-state electrolyte promotes the development of solid-state *** to lithium-ion batteries using liquid electrolyte,the solid-state batteries feature the hi gh energy density and non-flammability,which accelerates the revolution in portable electronics and ***-type Li_(7)La_(3)Zr_(2)O_(12)(LLZO)solid-state electrolyte is considered as the promising solid-state electrolyte due to high ionic conductivity,Li transference number and shear ***,surface contaminant and poor contact with lithium inhibit its practical application in lithium metal *** review provides a brief introduction about structure and properties of ***,we conclude the modification strategies for increasing ionic conductivity,enhancing interfacial contact and inhibiting lithium *** last,the challenge and perspectives are discussed for development of LLZO in solid-state batteries.

关键词： Li_(7)La_(3)Zr_(2)O_(12) Surface contaminant Elemental doping Interface modification Structure design Tungsten

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钙肥在番茄上的应用

长江蔬菜 2024年第15期 69-71页

作者：杨超吕建李阔杨明宇李跃超北京市密云区优质农产品服务站北京101500 北京市密云区农业服务中心北京101500

随着设施蔬菜栽培的快速发展,为提高番茄产量和果实品质,以钙肥在番茄上的应用为例,研究钙肥的作用机理、施用方法以及与其他营养元素的关系,并提出合理选择钙肥类型与配施比例,优化施钙时间和方式的综合管理策略,以期为番茄高效施钙提... 详细信息

随着设施蔬菜栽培的快速发展,为提高番茄产量和果实品质,以钙肥在番茄上的应用为例,研究钙肥的作用机理、施用方法以及与其他营养元素的关系,并提出合理选择钙肥类型与配施比例,优化施钙时间和方式的综合管理策略,以期为番茄高效施钙提供参考。

关键词：番茄钙肥应用管理

Superior Mechanical Properties of GaAs Driven by Lattice Nanotwinning

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Chinese Physics Letters 2021年第4期38卷 81-86页

作者： Zhenjiang Han Han Liu Quan Li Dan Zhou jian lv International Center for Computational Physics Method and Software State Key Laboratory of Superhard MaterialsKey Laboratory of Automobile Materials of MOEand Department of Materials ScienceJilin UniversityChangchun 130012China

Gallium arsenide(GaAs),a typical covalent semiconductor,is widely used in the electronic industry,owing to its superior electron transport ***,its brittle nature is a drawback that has so far significantly limited its *** exploration of the structural deformation modes of GaAs under large strain at the atomic level,and the formulation of strategies to enhance its mechanical properties is highly *** stressstrain relations and deformation modes of single-crystal and nanotwinned GaAs under various loading conditions are systematically investigated,using first-principles *** results show that the ideal strengths of nanotwinned GaAs are 14% and 15% higher than that of single-crystal GaAs under pure and indentation shear strains,respectively,without producing a significantly negative effect in terms of its electronic *** enhancement in strength stems from the rearrangement of directional covalent bonds at the twin *** results offer a fundamental understanding of the mechanical properties of single crystal GaAs,and provide insights into the strengthening mechanism of nanotwinned GaAs,which could prove highly beneficial in terms of developing reliable electronic devices.

关键词： Lattice electronic crystal

The exotically stoichiometric compounds in Al-S system under high pressure

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npj Computational Materials 2020年第1期6卷 1565-1570页

作者： Sen Shao Wenji Zhu jian lv Yanchao Wang Yue Chen Yanming Ma State Key Laboratory of Superhard Materials&International Center for Computational Method and Software Jilin UniversityChangchun 130012China Department of Mechanical Engineering The University of Hong KongPokfulam RoadHong KongHong Kong SAR International Center of Future Science Jilin UniversityChangchun 130012China

Aluminum and sulfur,as abundant elements in earth,only form Al_(2)S_(3) in nature at ambient *** has been realized that the stoichiometry of compounds may change under high pressure,which is crucial in the discovery o... 详细信息

关键词： materials system compounds

Mating behavior and sexual selection in a polygamous beetle

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Current Zoology 2013年第2期59卷 257-264页

作者： Wen LU Qiao WANG Mingyi TIAN Jin XU jian lv Aizhi QIN College of Agriculture Guangxi University Narming 530005 China Institute of Natural Resources Massey University Private Bag 11222 Palmerston North New Zealand College of Natural Resources and Environment South China Agricultural University Guangzhou 510642 China College of Agriculture Yunnan University Kunming 650091 China Library Guangxi University Narming 530005 China

Mating behavior and sexual selection in relation to morphometric traits in a polygamous beetle, Glenea cantor （F.）（Coleoptera： Cerambycidae）, were investigated. Upon encounter, a male approached a female, mounted her, grasped her terminal abdomen with his hind tarsi, and attempted to mate. Successful mating lasted about 3.5 h. Although all traits measured in females and half of traits in males were significantly correlated with mating success, the primary selection on virgin females was the genital trait, thebursa copulatrix length, and that on males was the body length and hind tarsal length. Longer bursa copulatrix accommodated a larger ejaculate, suggesting that this female trait benefits the male that first mates with the female in terms of in- creasing ejaculate size to beat subsequent males in sperm competition. Under a female-biased sex ratio, more than 20% of mat- ings failed within 20s after the male genitalia had been inserted into hers, suggesting that males assess genital features of the re- ：male before insemination and undertake cryptic male mate choice. Larger males were more capable of grasping females and achieving mating. During the premating struggle the male almost always used his hind tarsi to lift the female terminal abdomen to the position for his genitalia to insert, and as a result, males with longer hind tarsi achieved higher mating success [Current Zoolo- gy 59 （2）： 257-264, 2013].

关键词： Bursa Body length Mating behavior Sexual selection Tarsal length

Towards context consistency by concurrent checking for Internetware applications

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Science China(Information Sciences) 2013年第8期56卷 69-88页

作者： XU Chang LIU YePang CHEUNG S.C. CAO Chun lv jian State Key Laboratory for Novel Software Technology Nanjing University Department of Computer Science and Technology Nanjing University Department of Computer Science and Engineering The Hong Kong University of Science and Technology

Internetware applications are emerging and being widely *** can adapt their behavior based on environmental contexts and deliver smart *** contexts can be subject to various noises,which cause them to be inaccurate,incomplete,or even to conflict with each *** is known as context inconsistency *** inconsistency can trigger unexpected behavior to applications,and therefore should be *** promising approach is to check contexts against consistency constraints so as to detect the occurrences of context inconsistency at *** techniques have attempted different ways to improve the checking efficiency or effectiveness with different trade-offs in space overhead or communication ***,none of them has exploited multi-core computing capability to systematically improve the checking *** this paper,we propose a novel concurrent checking technique Con-C to efficiently detect inconsistencies in huge volumes of dynamic ***-C derives checking subtasks for each consistency constraint based on its structure and *** achieves this in a fully automated way,and at the same time can guarantee its derived checking subtasks to be persistently *** evaluated Con-C by controlled experiments through a large-scale real-world *** reported promising results that Con-C improved the checking efficiency by extra 57.0%,in addition to what had been gained by incremental checking.

关键词： concurrent checking consistency constraint context inconsistency pervasive computing Internetware

Gegen Qinlian decoction enhances immunity and protects intestinal barrier function in colorectal cancer patients via gut microbiota

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World Journal of Gastroenterology 2020年第48期26卷 7633-7651页

作者： Yang Li Zhong-Xin Li Chen-Yang Xie Jing Fan Ji lv Xin-jian Xu jian lv Wen-Tao Kuai Yi-Tao Jia Department of Oncology Hebei General HospitalShijiazhuang 050051Hebei ProvinceChina Department of Oncology Affiliated Hospital of Hebei UniversityBaoding 071000Hebei ProvinceChina Second Department of Surgery The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina Department of Surgery The First Hospital of QinhuangdaoQinhuangdao 066000Hebei ProvinceChina Department of Thoracic Surgery The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina Department of Emergency Hebei General HospitalShijiazhuang 050051Hebei ProvinceChina

BACKGROUND We previously showed,using the Traditional Chinese Medicine System Pharmacology Database,that Gegen Qinlian decoction(GQD)had a direct antitumor effect,and was combined with programmed cell death protein(PD)-1 inhibitors to treat microsatellite stable(MSS)tumor-bearing ***,the effect of GQD on patients with colorectal cancer(CRC)is not *** To determine the therapeutic mechanism of GQD in improving immune function,reducing inflammation and protecting intestinal barrier *** Seventy patients with CRC were included in this study:37 in the control group and 33 in the treatment *** proportions of CD4+T,CD8+T,natural killer(NK),NKT and T regulatory cells were measured by flow *** of the cytokines tumor necrosis factor(TNF)-α,interferon(IFN)-γ,interleukin(IL)-2,IL-6,IL-10 and serotonin(5-hydroxytryptamine;5-HT)in serum were assessed by enzyme-linked immunosorbent assay(ELISA).The expression of zonula occludens(ZO)-1,occludin,nuclear factor(NF)-κB and TNF-αin tumor and normal tissues was measured by *** composition of gut microbiota from patients in the treatment group was assessed using 16S rDNA *** There were no adverse events in the treatment *** proportion of CD4+T cells and NKT cells in the post-treatment group was significantly higher than that in the pre-treatment and control groups(P<0.05).The level of TNF-αin the posttreatment group was significantly lower than that in the pre-treatment and control groups(P<0.05).The concentration of 5-HT in the post-treatment group was significantly lower than that in the pre-treatment group(P<0.05).The expression of ZO-1 and occludin in tumor tissues in the treatment group was significantly higher than that in the control group(P<0.05).The expression of ZO-1 in normal tissues of the treatment group was significantly higher than that in the control group(P=0.010).Compared with the control group,expression of NF-κB and TNF-αin tumor tis

关键词： Colorectal cancer Gegen Qinlian decoction Immunity Inflammation Intestinal barrier function Gut microbiota