Effect of Cultivation Conditionss on Quality Parameters of High Grade Hybrid Rape of Brassica napus L.

[Objective] This study aimed to investigate the combined effects of sowing date, plant density, nitrogenous fertilizer, phosphorus fertilizer and potassium fertilizer on quality parameters of high grade hybrid rapeseed. [Method] By using Youyan 599 and Sanbei 98 as experimental materials, quadratic orthogonal rotation combination with five factors was designed for this study. [Result] Erucic acid content was nega- tively correlated with sowing date and nitrogen fertilizer, positively correlated with plant density. Glucosinolate content was negatively correlated with sowing date, positively correlated with potash fertilizer amount. Oil content was negatively correlated with sowing date and nitrogen fertilizer amount, positively correlated with plant density and potash fertilizer amount. Protein content was positively correlated with sowing date and nitrogen fertilizer amount, negatively correlated with plant density and potash fer- tilizer amount. Oleic acid content was negatively correlated with phosphate fertilizer amount, positively correlated with nitrogen fertilizer amount. Palmitic acid was nega- tively correlated with potash fertilizer amount, positively correlated with sowing date, plant density, nitrogen fertilizer amount and phosphate fertilizer amount in Youyan 599, but negatively correlated with sowing date, plant density, nitrogen fertilizer amount and phosphate fertilizer amount in Sanbei 98. Stearic acid content was posi- tively correlated with sowing date, plant density, nitrogen fertilizer amount and phos- phate fertilizer amount. Linoleic acid was positively correlated with density and nitroge- nous fertilizer, but negatively correlated with potash fertilizer amount. Linolenic acid was positively correlated with nitrogen fertilizer amount and potash fertilizer amount. Eicosenoic acid was negatively correlated with sowing date. There were positive cor- relations and negative correlations among cultivation conditions and quality parame- ters, and the positive correlations and negative correlations could counteract each other. Expression of quality parameters for each treatment was the combined effect. Among the 50 pairs of simple correlations of five cultivation factors and ten quality parameters, 26 pairs were consistent between two varieties, 24 pairs of simple corre- lation were not. Sowing date, plant density, nitrogen fertilizer amount and phosphate fertilizer amount showed significant influence on erucic acid of two varieties, but small effect on palmitic acid. [Conclusion] The combined effect of the five cultivation factors could not fundamentally improve the quality traits of high grade hybrid rapeseed.

Research on the effect estimation of seismic safety evaluation

Seismic safety evaluation is a basic work for determining the seismic resistance requirements of major construc-tion projects. The effect, especially the economic effect of the seismic safety evaluation has been generally con-cerned. The paper gives a model for estimating the effect of seismic safety evaluation and calculates roughly the economic effect of seismic safety evaluation with some examples.

Comparions of Required Nitrogen Fertilizers by Hybrid Cultivar and Conventional Cultivar of Rapeseed(Brassica napus L.)

[Objective] The aim of this study was to understand the difference of N fertilizer requirement between hybrid rapeseed and conventional rapeseed. [Method] Two hybrid cultivars, ZY5628 and ZY7819, and the conventional cultivar ZS10, were compared through two field experiments. In Experiment 1, seed yield and optimum N application rate were assessed in the field with five N application treatments. In Expedment 2, N was applied uniformly at 180 kg/hm2, and plant biomass and N accumulation were measured at several developmental stages, while N use efficien- cy was calculated for rape at maturity. [Results] The experiment 1 results showed that seed yields of ZY5628 and ZY7819 were both significantly higher than that of ZS10, and compared to ZS10, optimum yield （plateau yield） was higher by 18.7% and 20.2%, while the recommended N application rate was lower by 9.5% and 9.6% for ZY5628 and ZY7819, respectively. The experiment 2 results showed that during vegetative development, all three cultivars exhibited similar accumulations of plant biomass and N, but through flowering and maturity ZY5628 and ZY7819 pro- duced more biomass, acquired more N, and utilized acquired N more efficiently to- wards seed production than ZS10. [Conclusion] With equivalent inputs, the hybrid rapeseed cultivars ZY5628 and ZY7819 tested herein yield more seed with higher N use efficiency than the conventional rapeseed ZS10. This information will be valu- able for growers seeking to improve efficiency while reducing costs of rape production in China.

Popularization and Application of Haidaosu(5% Amino-oligosaccharin)as a Plant Immunity Inducer in Main Crops Cultured by Corps

The plant immunity inducer, amino-oligosaccharin, has remarkable effects in disease resistance, cold tolerance, growth promotion, yield increase and quality improvement. This paper introduced the action mechanism of amino-oligosaccharin, its main application effects on crops and application techniques. In 2013-2014, ex- periments were conducted on a variety of crops at multiple locations by Xinjiang Corps as well as popularization and application in 2013-2014, and it was shown by the popularization and application that the application of amino-oligosaccharin could promote plant growth, reduce the incidence of crop diseases and improve crop yield and product quality.

Review of magnetocaloric effect in perovskite-type oxides

We survey the magnetocaloric effect in perovskite-type oxides （including doped ABO3-type manganese oxides, A3B2OT-type two-layered perovskite oxides, and A2B＇B＇＇O6-type ordered double-perovskite oxides）. Magnetic entropy changes larger than those of gadolinium can be observed in polycrystalline La1-xCaxMnO3 and alkali-metal （Na or K） doped La0.8Ca0.2MnO3 perovskite-type manganese oxides. The large magnetic entropy change produced by an abrupt reduction of magnetization is attributed to the anomalous thermal expansion at the Curie temperature. Considerable mag- netic entropy changes can also be observed in two-layered perovskites Lal.6Cal.4Mn207 and La2.5-xK0.5＋xMn2O7＋6 （0 〈 x 〈 0.5）, and double-perovskite Ba2Fe1＋xMol-xO6 （0 〈 x 〈 0.3） near their respective Curie temperatures. Com- pared with rare earth metals and their alloys, the perovskite-type oxides are lower in cost, and they exhibit higher chemical stability and higher electrical resistivity, which together favor lower eddy-current heating. They are potential magnetic refrigerants at high temperatures, especially near room temperature.

Chinese herbal protocol anti-fibrosis 1 improves radiation induced fibrosis and its related dysfunctions

Objective: Radiotherapy is the main modality for treatment of malignancies, but radiation fibrosis is a severe side effect of radiotherapy which may cause severe dysfunction of patients. We design a new tr aditional Chinese her bal pr otocol, which is named as Anti-fibrosis 1, and use it in patients with severe radiation fibrosis. Methods: From Feb 2013 to Feb 2014, 23 patients with severe radiation fibrosis and apparent dysfunction were treated with anti-fib rosis 1. The re were 7 pa ti ents with nasopharyngeal car cinoma, 7 with oral cavity and oral pharyngeal carcinoma, 2 with pharyngeal carcinoma, 2 with breast carcinoma, 2 with esophageal carcinoma and 3 patients with pelvic malignancies. All patients received radiothe rapy at least 0.5-8 years ago, and 22 pa ti ents with complete response, but all patients suffered with severe radiation fibrosis. The radiation dosage was among 50-74Gy/25-37f/35-70d. Patients status of fibrosis and recovery of tissue and organ were evaluated after 0.5, 1.5 and 3 months of herbal treatment. Results: 22 of 23 patients were head and neck car cinoma, 20 pati ents had got par tial r elief afte r 15 days medication with anti-fib rosis 1, nea rly all pa ti ents had got appa rent r elief afte r 1.5 month of medication. But, there was no apparent difference between 1.5 month and 3 months group. There were no apparent side effects after the herbal treatment. Conclusions: The traditional Chinese herbal protocol anti-fibrosis 1 is an effective and safe modality for radiation fibrosis. And the apparent effect occurred after 1.5 month of herbal medication.

Vibration analysis of foam plates based on cell volume distribution

In this paper, vibration analysis of irregular-closed-cell foam plates is per- formed. A cell volume distribution coefficient is introduced to modify the original Gibson- Ashby equations of effective Young＇s modulus of foam materials. A Burr distribution is imported to describe the cell volume distribution situation. Three Burr distribution pa- rameters are obtained and related to the cell volume range and the diversity. Based on the plate theory and the effective modulus theory, the natural frequency of foam plates is calculated with the change of the cell volume distribution parameters. The relationship between the frequencies and the cell volumes are derived. The scale factor of the average cell size is introduced and proved to be an important factor to the performance of the foam plate. The result is shown by the existing theory of size effects. It is determined that the cell volume distribution has an impact on the natural frequency of the plate structure based on the cell volume range, the diversity, and the average size, and the impact can lead to optimization of the synthesis procedure.

长三角城市群FDI、技术创新与先进制造业集群发展

FDI和技术创新是长三角城市群先进制造业集群发展的重要影响因素。文章基于2010—2021年长三角城市群26个城市面板数据,分析FDI对先进制造业集群发展的直接作用机制以及技术创新在FDI与先进制造业集群发展之间的中介作用机制,并运用面板回归模型和中介效应模型检验理论假设。研究结果表明:长三角城市群FDI对先进制造业集群发展具有显著的正向作用,其作用机制主要表现为促进集群网络化、产业链优化和劳动力流动;技术创新在FDI与先进制造业集群发展之间具有显著的中介作用。根据研究结论提出长三角城市群促进FDI高质量发展、提高先进制造业集群的科技创新能力、加强FDI与技术创新的协同效应等政策建议。

Sonoluminescence as the PeTa Radiation, Part Two

This paper is a continuation of one published in this journal nine months ago. The two papers present a model of cavitational luminescence (CL), multi-bubble sonoluminescence (MBSL), one-bubble sonoluminescence (OBSL), and laser-induced bubble luminescence (LIBL). The basis of this model is the PeTa (Perel’man-Tatartchenko) effect, a nonequilibrium characteristic radiation under first-order phase transitions, especially vapour condensation. In this model, the main role is given to the liquid, where the evaporation, condensation, flash, and subsequent collapse of bubbles occur. The instantaneous vapour condensation inside the bubble is a reason for the CL/MBSL/OBSL/LIBL. Apparently, the dissolved gases and other impurities in the liquid are responsible for peaks that appear at the background of the main spectrum. They are most likely excited by a shock wave occurred during the collapse. This paper, in contrast to the previous one, presents a slightly expanded model that explains additional experimental data concerning especially the LIBL spectrum. As a result, today we are not aware of any experimental data that would contradict the PeTa model, and we continue to assert that there is no mystery to the CL/MBSL/OBSL/LIBL phenomena, as well as no reason to hope that they can be used for high-temperature chemical reactions, and even more so for a thermonuclear ones.

供应链金融、融资约束与绿色技术创新——基于中介效应与门槛效应的检验

绿色技术创新是企业绿色转型和高质量发展的动力,供应链融资为绿色技术创新提供了保障。选择2012—2021年中国沪深A股和创业板共1 360家上市公司的数据为研究样本,采用双向固定效应模型、中介效应模型及面板门槛效应模型,基于融资优化视角,实证分析了供应链金融对企业绿色技术创新的影响效应及作用机制。研究发现:(1)供应链金融能够显著提升企业绿色技术创新数量与质量,且该结论在经过一系列稳健性检验后依旧成立;(2)供应链金融通过缓解融资约束提高企业绿色技术创新水平,而融资约束在供应链金融与企业绿色技术创新之间发挥遮掩效应,且在不同门槛值下存在差异化影响;(3)供应链金融对企业绿色技术创新的驱动作用在国有企业、高技术行业企业及处于成长期与成熟期的企业中更显著。研究结论为通过供应链融资引导企业绿色创新发展提供了科学的经验证据和决策参考。

新文科背景下高校俄语专业课程思政教学的有效策略研究

课程思政理念因其对传统课堂的重构及与思想政治教育的有机结合,已引起我国教育领域的广泛关注.该文在深入剖析课程思政内涵的基础上,探讨俄语专业课程思政教学,提出可供高校俄语专业课堂教学借鉴的思政教育有效融入策略,帮助高校俄语教师运用多方资源创新课程体系,落实“立德树人”根本任务,培养出一批又一批能够担当民族复兴大任的时代新人.

天线整流罩对GNSS观测值与定位精度影响研究

当前大部分城市为保护卫星连续运行参考站(CORS)系统基准站天线安装了整流罩,但天线整流罩对观测值以及基准站坐标影响的研究仍显不足。为解决基于广州CORS(GZCORS)的网络RTK高程测量存在较大偏差的问题,基于2016—2021年观测站数据,以及拆除基准站天线罩前后的观测数据质量与定位效果相关分析,对天线整流罩对GNSS观测值与高程定位精度的影响进行了深入探究,并分别进行了静态仿动态和城市车载动态定位测试验证。研究结果显示,天线整流罩在一定程度上会增加原始观测值的多路径效应影响,降低约10%的数据可用率,并对基准站高程定位结果产生1~14 cm的系统性偏差,进而影响用户RTK高程定位效果。定位结果显示,拆除基准站天线罩后,基于GZCORS的RTK水平定位均方根误差(RMS)为1 cm左右,高程定位精度RMS为2 cm左右;城市场景下车辆动态定位精度RMS为15~20 cm,满足车道级定位性能。

京津冀协同对天津市信创产业的影响研究

本文基于2011—2022年京津冀地区相关数据,构建京津冀协同、信创产业及中介变量指标体系,运用耦合协调度模型、线性回归及Bootstrap中介效应模型验证了京津冀协同对天津市信创产业的赋能路径。结果表明:京津冀协同可直接影响天津市信创产业的发展,也可通过产业互补、区域竞合和对外开放三方面中介间接发挥作用,且实证结果显著、稳健。故此提出建立权威信创组织,坚持共建共管共享理念,加强京津冀产业分工,引导京津冀城市群良性竞合以及充分发挥天津港优势,扩大高水平对外开放的政策建议。

考虑地应力影响的裂缝型致密砂岩储层有效性测井评价方法

塔里木盆地库车坳陷迪北气藏侏罗系致密砂岩储层埋藏深度大,裂缝普遍发育,在常规岩石物理参数相似的情况下单井产能差异大,储层有效性传统评价方法适用性差。为了提高勘探开发效率,从地应力角度出发,分析地应力对储层的控制作用,研究其与储层有效性的对应关系,利用测井曲线构建最小水平主应力相对值、应力集中系数、裂缝活动性参数和裂缝有效应力4个参数,建立储层有效性评价标准。将该方法用于单井储层有效性评价中,效果良好。结果表明:地应力和岩石的应力集中控制着基质储层的有效性,裂缝的力学特性控制了裂缝的有效性,同时也是气井产能的主控因素,泥岩裂缝能否贯穿泥岩沟通上下砂体是单井高产的关键。研究成果对类似储层有效性评价具有一定的指导意义。

中药白及在治疗慢性创面修复中的应用进展

白及Bletilla striata(Thunb.)Reichb.f.是一种传统中药,具有收敛止血、消肿生肌等功效,常用于外伤出血、疮疡肿毒等。古籍记载及现代临床发现白及具有治疗慢性难愈性创面的功效,为深入研究白及治疗慢性难愈性创面的活性物质基础、药理作用及机制,因此对近年来国内外有关白及的报道进行了综述。在创面修复过程中,白及具有止血、抗炎、抗病原微生物、抗氧化、免疫调节、促进表皮生长因子增殖、分泌胶原蛋白等药理作用,可以通过调节伤口的微环境来促进慢性难愈性伤口的愈合。同时提出了白及在临床应用中存在的问题和解决办法,展望了白及在慢性创面修复中的应用前景,为合理开发白及资源用于临床伤口护理提供理论依据。

结构性资产负债表衰退及其宏观经济效应与政策协整

疫后恢复政策组合拳,有力承托了中国宏观经济运行的积极因素,但当前经济下行压力依然突出,部分领域发展呈现明显波动,亟须有能够“对症下药”的理论解释和宏观政策应对。构建NK-DSGE模型,探讨结构性资产负债表衰退的宏观经济效应以及相应政策协整问题。研究结果展示,典型事实蕴含中国不存在总体资产负债表衰退,但存在结构性资产负债表衰退的证据。在宏观层面,结构性资产负债表衰退冲击会导致宏观经济较长时期下滑,乃至引发债务-通缩风险,而在微观层面,减轻资产负债表衰退企业的债务厌恶和改善正常经营企业的融资约束有助于减弱上述影响。调节效应分析表明,结构性资产负债表衰退会抑制技术进步与需求扩张对产出的促进作用,但在技术进步情形下,上述抑制作用有限。为减小福利损失,财政政策应盯住衰退类企业债务,货币政策应锚定高融资约束企业债务,并提高政策反应力度,宏观审慎政策应提高对资产价格的敏感度。上述结论为理解微观层面债务厌恶所产生的宏观合力以及设计实施相应政策搭配提供参考。

富水砂层宾汉浆液柱形渗透扩散模型及其试验研究

【目的】富水砂层灾害防控是困扰隧道、深大基坑等安全施工的重大难题,常通过袖阀管向地层内渗透注浆来提高强富水弱胶结砂质地层抗渗性和承载力,其注浆结石体近似为圆柱形。【方法】为探究砂层渗透注浆柱形扩散机理,首先构建考虑迂曲效应的宾汉浆液在砂层内渗透注浆的辐射管道流柱形扩散模型,然后研制一套砂层渗透注浆柱形扩散模型试验装置,开展不同颗粒级配被注砂土、不同注浆压力和不同水灰比水泥基浆液条件下的砂层渗透注浆试验,探究浆液扩散规律,最后结合试验结果验证理论合理性。【结果和结论】结果表明:当被注砂土粒径较小且黏性土含量较高时,注浆压力对扩散半径影响较小,浆液水灰比是影响注浆扩散形态的主控因素:此时若浆液水灰比较大,则渗滤效应不显著,注浆扩散半径较大且不容易发生串浆,但砂土颗粒之间的黏结强度沿径向逐渐降低;此时若浆液水灰比较小,则渗滤效应显著,浆液扩散较短距离后孔隙空间即被完全淤堵,土层交界面会成为浆液优势扩散面,出现串浆现象。当被注砂土粒径较大且黏性土含量较低时,低压稀浆与高压浓浆条件均可使浆液在砂土内充分扩散,但砂土孔隙分布的随机性、空间差异性和颗粒型浆液扩散的迂曲效应、渗滤效应会导致注浆结石体形状不是规则的圆柱体。浆液压力在扩散方向上衰减速度先快后慢,注浆扩散半径理论计算值比试验值大6.10%~10.97%,起始注浆压力理论计算值与试验值的相对误差为–0.48%~18.62%。研究成果可为砂层渗透注浆参数设计提供理论支撑与指导。

基于大科学装置的纳米生物效应研究进展

纳米生物效应是指纳米尺度物质与生命体系的相互作用情况。大科学装置也称大科学设施,是指需通过较大规模投入和工程建设来完成、建成后通过长期的稳定运行和持续的科学技术活动而实现重要科学技术目标的大型设施。大科学装置可为纳米生物效应研究提供重要工具。基于大科学装置的相关技术在时间分辨率、空间分辨率、测定通量和原位分析方面具有独特优势,可为纳米生物效应研究提供前沿分析方法。该文介绍了基于大科学装置的相关技术在纳米生物效应研究中的最新进展,着重总结了基于同步辐射装置、自由电子激光装置和中子源等相关技术在纳米生物效应研究中的应用进展,特别是纳米材料表征、纳米材料在生物体内的分布与转化以及纳米材料与生物分子的相互作用研究等。此外,也对利用新一代大科学装置开展纳米生物效应研究进行了展望。

环境规制执行互动影响工业绿色转型的空间效应研究

基于2006—2021年省级面板数据,在理论分析的基础上,借助两区制空间杜宾模型考察了环境规制执行的空间互动形式,并构建空间杜宾模型实证检验了环境规制执行互动影响工业绿色转型的空间效应,结果显示:正式环境规制表现为“竞相向上”的空间互动形式,非正式环境规制表现为“竞相向上”和“逐底竞争”并存的空间互动形式;正式环境规制和非正式环境规制的本地效应略高于空间溢出效应,地理接壤地区的总体空间效应高于地理相邻地区。因此,应从宏观视角持续优化环境治理结构,引导环境规制良性竞争;从中观视角发挥区域协同治理优势,强化环境规制互动成效;从微观视角深入落实绿色金融战略,提高绿色金融监管水平;从空间视角合理布局工业绿色产业,全面推进绿色低碳转型。

面向稳定场图像重建的有效场源及场源函数

针对目前稳定场图像重建模型在处理图像边缘和复杂纹理区域依然会产生错误,以及面向实时处理的重建效率问题,提出有效场源选择和场源函数构造算法.首先将稳定场模型与图像纹理相结合,计算缺损像素点处的主纹理方向区间来确定有效场源;然后采用微分近似的方法,利用低阶泰勒展开式构造有效场源与缺损像素点之间的场源函数完成重建.与基于CDD模型的改进算法、基于Criminisi模型的改进算法,以及2种基于稳定场模型的重建算法进行实验的结果表明,所提算法的峰值信噪比平均提高1.5~2.6 dB;重建准确率平均提高3.5%~7.9%;在所选图像以及CelebA-HQ人脸数据集上的实验结果表明,该算法实现了对不同类型缺损图像高效且准确的重建.