Modern pollen-vegetation relationships along altitudinal vegetation belts in the Leigong Mountain of southwestern China

Understanding the distribution,dispersal,and correlation of modern pollen with vegetation in mountainous regions is essential for establishing accurate modern analogs for fossil pollen records.This study,conducted in Leigong Mountain on the YunnanGuizhou Plateau of southwestern China,involved the collection of 35 surface soil samples from diverse vegetation communities along an elevational gradient ranging from 1210 to 1875 meters.The results reveal a close correspondence between modern pollen assemblages and vegetation zones.Principal Component Analysis(PCA)results indicate that pollen assemblages can effectively distinguish between subtropical montane evergreen broad-leaved forest(SEBF)and subtropical montane deciduous broadleaved forest(SDBF).However,both SEBF and SDBF show significant overlap with subtropical montane evergreen-deciduous broad-leaved mixed forest(SEMF).Detrended Correspondence Analysis(DCA)results clearly distinguish the three vegetation zones,and the first axis of DCA shows a significant positive correlation with elevation(p<0.01,R=0.48).Discriminant Analysis(DA)successfully assigns 94.4%of the modern pollen samples to their respective vegetation zones.Pollen taxa such as Impatiens,Astertype,and Rosaceae exhibit significant indicative capabilities for the SEBF zone,effectively distinguishing this vegetation zone from others.Pinus and Alnus display overrepresentation in the Leigong Mountain region,while Quercus(D,deciduous-type)and Poaceae exhibit high representation in the SEBF zone.In the SEBF zone,both pollen diversity and richness are the lowest.Our study reveals the complex relationship between the richness and diversity of pollen and vegetation.The diversity and richness of tree and shrub pollen are found to be lower than those of the corresponding plants.The pollen-vegetation relationship elucidated in this study serves as a critical reference for reconstructing ancient environments from fossil pollen retrieved in this region.

Analysis on Modern Teaching of English and American Literature Courses for College English Majors

As global economic integration development enters a realization era,English holds a very important position in China's diplomacy as the language is an internationally-used language.Besides,English also plays a very important role in our daily life.Colleges and universities should pay more attention in strengthening the development of English teaching courses as they are an important base for cultivating high-quality talents.In the modern teaching of English and American literature courses,college English majors do not only need to teach students English language knowledge but are also required need to strengthen students'knowledge and study of national culture.In this journal,the author investigates and analyses the current situation and existing problems of the modern teaching of English and American literature courses in English majors of colleges and universities.Then,puts forward the implementation strategies such as modern teaching of English and American literature courses in English majors’colleges and universities,aiming to help in implementing the teaching of English and American literature courses successfully.

Analysis on Modern Teaching of English and American Literature Courses for College English Majors

As global economic integration development enters a realization era,English holds a very important position in China's diplomacy as the language is an internationally-used language.Besides,English also plays a very important role in our daily life.Colleges and universities should pay more attention in strengthening the development of English teaching courses as they are an important base for cultivating high-quality talents.In the modern teaching of English and American literature courses,college English majors do not only need to teach students English language knowledge but are also required need to strengthen students'knowledge and study of national culture.In this journal,the author investigates and analyses the current situation and existing problems of the modern teaching of English and American literature courses in English majors of colleges and universities.Then,puts forward the implementation strategies such as modern teaching of English and American literature courses in English majors’colleges and universities,aiming to help in implementing the teaching of English and American literature courses successfully.

2-7 Voltage Calibration and Energy Spread Measurement of 320 kV Platform at the Institute of Modern Physics

Four key reactions, 12C(, )13O, 13C(, n)16O, 25Mg(p, )26Al and 19F(p, )16O, will be studied for the first time within or near the astrophysical relevant energy regions (Gamow window) at Jinping Underground laboratory for Nuclear Astrophysics (JUNA)[1], which will take the advantage of the ultra-low background of China JinPing underground Laboratory (CJPL), high current accelerator based on ECR source and a highly sensitive detection system.

Breeding Effects and Genetic Compositions of a Backbone Parent (Fengbazhan) of Modern indica Rice in China

Fengbazhan(FBZ)and its derived varieties have been widely cultivated in China,accounting for 22%of China’s paddy fields.Therefore,evaluating the breeding.Effects of FBZ and elucidating its genetic compositions are effective strategies for interpreting the history of modern rice breeding.Using integrative bioinformatics analysis and population validation,we found that the expression of favorable genes on chromosome 6 was important for the breeding of FBZ-derived varieties and these favorable genes were gradually optimized during the breeding process,which was consistent with the conjecture of the‘Rice Core Germplasm Breeding Theory’.For several decades,tremendous efforts have been made by Chinese scientists in rice breeding to improve grain yield,nutritional quality and environmental performance,thereby achieving substantial progress in global food security.Several rice breeding technologies have been developed,including semi-dwarf breeding,utilization of heterosis,launching the‘Super Rice Project’,development of green super rice and molecular design breeding(Qian et al,2016;Bai et al,2018;Tang and Cheng,2018;Yu et al,2022).In southern China,rice can be divided into the early,middle and late rice,and the cultivation area in southern China accounts for approximately 80%of China’s rice cultivation area.Currently,several distinct rice varieties are widely cultivated in southern China.

The 9th International Symposium on Modern Acoustics （continued）

The 9th International Symposium on Modern Acoustics was held in Nanjing,China,on May 19 -22,2012,which has been introduced in an article published in Journal of Nanjing University (Natural Sciences),2012[1].As described previously,after peer reviewing,a part of the original papers were selected to be published in Journal of Nanjing University(Natural Sciences),which were separated as two issues:the first has already been published in a special issue of the journal in 2012[2～19].

迷死人和造型抢眼的Oye Modern饰品 材质多变,包装环保的手工创意

创意是无所不能的魔法师,让没有生命的东西充满了诱惑;成品却是创意笔下的诞生物,让诱惑变得愈加有价值;Treasure 全面散发力量,找寻那些富有智慧的奇迹,让精品离你最近。

Modern Annotation on Marx's Theory of Man and Nature

Marx's theory of man and nature is an indispensable important constituent of Marx's society development theory. The humanity is not always there,and they come from natural world and are long-term development products of the nature. Man has the undeniable dependence on the nature,but this kind of dependence is not the negative adaptation and is that the humanity has the huge motility to the nature. It should correctly process the relation between man and nature,and realize positive cycle and coordinated development between natural ecology and human society. It has the significant theory value and the practical significance for human society's sustainable development to grasp and comprehend scientific connotation of Marx's theory of man and nature.

Present Situation and Development Countermeasures of Modern Agriculture Industrial Clusters of 100 Billion Output in Nanchong City

Industrial clusters have an obvious role in promoting regional economic development and can enhance region core competitiveness.In order to rapidly promote the economic development of Nanchong,from the aspects of agricultural resources,brand advantages,modern agricultural demonstration zones,deep processing of agricultural products and cold chain logistics,the development status of modern agricultural industrial clusters of 100 billion output in Nanchong City is summarized in this article. For existing problems,resolution strategies are proposed from the aspects of focuses,work paths and safeguards.

Ancient and modern medication laws of aromatic Chinese medicines in treating angina pectoris based on data mining

Objective To explore ancient and modern medication laws of aromatic Chinese medicines in treating angina pectoris, and to provide new ideas for the clinical treatment.Methods With “angina pectoris” as the key word, ancient books prescriptions and Chinese patent medicines related to angina pectoris were collected from China National Knowledge Infrastructure(CNKI), Traditional Chinese Medicine Database System, Chinese Medicine Prescription Database, New National Proprietary Chinese Medicine(2 nd edition), and Chinese Pharmacopoeia(2020 edition) from January 1, 2015 to December 31, 2021. Core highfrequency aromatic Chinese medicines were defined, and their potential medication rules were analyzed and summarized. Microsoft Access 2010 was used for data management. Data analysis software, including Excel and IBM SPSS Modeler 18.0 were used for drug association rule analysis, and Cytoscape 3.7.2 for visual display.Results There were 67 ancient books prescriptions and 258 Chinese patent medicines containing aromatic Chinese medicines treating angina pectoris collected from relevant databases. In ancient books prescriptions, there were nine aromatic Chinese medicines with the frequency ≥10, and the most commonly used medicine was Danggui(Angelicae Sinensis Radix), followed by Chenpi(Citri Reticulatae Pericarpium). There were 33 aromatic Chinese medicines with the frequency ≥10 in Chinese patent medicines, and the most commonly used medicine was Danshen(Salviae Miltiorrhizae Radix et Rhizoma), followed by Chuanxiong(Chuanxiong Rhizoma) and Sanqi(Notoginseng Radix et Rhizoma). In ancient books prescriptions, the medicines mainly belonged to intenal-warming medicines, Qi-regulating medicines, and blood circulation promoting and blood stasis removing medicines.There were eight medicine pairs with confidence equal to 100% in ancient books prescriptions, the most frequently used pairs were Chuanxiong(Chuanxiong Rhizoma) +Danggui(Angelicae Sinensis Radix), and Xiangfu(Cyperi Rhizoma) + Chenpi(Citri Reticulatae Pericarpium). In Chinese patent medicines, the aromatic Chinese medicine Chuanxiong(Chuanxiong Rhizoma) could be combined with many other Chinese medicines, among which the Confidence and Support of Chuanxiong(Chuanxiong Rhizoma) + Danshen(Salviae Miltiorrhizae Radix et Rhizoma) were at a high level.Conclusion Aromatic Chinese medicines for the treatment of angina pectoris of coronary heart disease are mainly warm, and the flavors are mainly pungent, sweet, and bitter. They mainly access to the liver, gallbladder, and pericardium meridians. The treatment of angina pectoris of coronary heart disease mainly focuses on warming heart pulse, and promoting blood circulation and removing blood stasis.

Strategic Measures for Implementing 300 Demonstration Projects to Lead the Construction of Modern Agricultural Industrial Clusters with Output of 100 Billion Yuan

To carefully implement the rural revitalization strategy,further promote the structural reform of the agricultural supply front,implement the "155 Development Strategy",speed up the cultivation of the modern agricultural industrial clusters with output of 100 billion yuan,and constantly consolidate the industrial foundation of the " Second City in Chengdu-Chongqing Line",the Municipal Party Committee and the Municipal Government of Nanchong City decided to implement the " 300 Demonstration Projects" of modern agriculture. It firmly grasps the " bull nose"( key part) of the project,energetically implements the construction of 100 modern circular agricultural demonstration parks,100 agricultural leading enterprises with output value of 100 billion yuan,and 100 agricultural new business model demonstration projects( hereinafter referred to as 300 Demonstration Projects),to realize the goal of the output value of the modern agriculture industrial clusters of Nanchong City exceeds 100 billion yuan in 2020.

Application of Modern Intelligent Optimization Method in Parameter Setting of PI Regulator of Accelerator Power Suppies Components

In the accelerator control system,many components use PI regulators for feedback control of the closed-loop system.In the process of parameter setting of PI regulators,empirical methods are often required and a lot of time is spent on parameter setting.This paper proposes a serial algorithm for generating multiple dimensional variables,which covld greatly improve the speed of parameter setting,reduce the time of manual parameter setting,and provide a fast and feasible method for parameter setting of equipment in accelerators that requires manual intervention solution.

Rooted in Tradition, Embracing Modernity： Zhou Zuoren＇s Interest in Modern Japanese Haiku and Tanka and His Promotion of Short Verse in China

When late Qing and early Republican-period Chinese reformers grappled with the challenges of creating a new poetic language and form in the early decades of the twentieth century, Zhou Zuoren （1885-1967）, one of modern China＇s most influential intellectuals, believed that much could be learned from the experiments of modern Japanese poets who had overcome similar challenges in the decades following the Meiji restoration. Of all the verse forms Japanese poets were experimenting with, Zhou was particularly interested in modern haiku and tanka. Zhou felt that the modern haiku and tanka＇s rootedness in tradition on the one hand and their ability to express modern sensibilities on the other could offer a model for Chinese poets seeking to create a poetic voice that was at once modern, but also anchored in traditional poetics. This article will analyze some of Zhou＇s translations of modern haiku and tanka and illustrate how these translations led him to promote a new poetic form in China, typically referred to as ＂short verse＂ （xiaosh0. By further reading Zhou＇s critical essays on modern Japanese poetry against the writings of a number of Western modernist poets and translators who themselves were inspired by East Asian verse forms--Ezra Pound in particular--I will comment on the degree to which Zhou＇s promotion of short verse inspired by modern Japanese haiku and tanka challenges a perceived Western role in legitimizing East Asian forms as conducive to modernism.

Potential role of the protein interactome in translating TCM theory and clinical practice into modern biomedical knowledge

With the awarding of the 2015 Nobel Prize in Physiology or Medicine to Chinese pharmacologist Tu Youyou,and the significant contributions of traditional Chinese medicine(TCM)for coronavirus disease 2019(COVID-19),TCM has garnered increasing attention and interest globally.Although advanced research progress has been made in the efficacy research,mechanism elucidation and target prediction of TCM in recent years[1].

基于弹丸膛内运动参数和压力测试的火炮膛内燃气温度估算方法

为了解决火炮膛内测试环境恶劣而导致发射药燃气温度测试难度大的问题,基于微波干涉仪、压力测试系统,结合发射药配方性能计算理论、装药内弹道性能计算模型等理论,建立了一种基于实测参数的火炮膛内燃气温度估算方法,并开展了试验研究。结果表明:火炮膛内燃气温度的最高值约为2631.8 K,随着弹丸运动迅速降低,弹丸出炮口时膛内燃气温度降低到约1858.4 K;建立的火炮膛内发射药燃气温度估算方法可以有效地获得火炮整个内弹道过程中火药燃气温度随时间的变化规律,为低烧蚀发射药及装药的研制提供了一种新的研究手段。

电动叶菜收获机速度协同控制系统设计与试验

针对电动叶菜收获机切割、输送和行走三者速度不协调导致的叶菜损伤率高、功耗大和收获效率低等问题,开发了一种电动叶菜收获机速度协同控制系统。系统以可编程逻辑控制器为核心,利用信息传感模块对割刀电机的电流、电压和转速进行数据采集;主控模块根据速度协同控制算法对采集信号进行处理,得到负载信息并协同切割、输送和行走三者速度。田间试验结果表明:系统稳定可靠,能够根据收获情况动态协同各部件速度参数,叶菜损伤率为8.88%;与传统定速控制方法相比,收获机功耗降低了13.1%,收获效率提升了33.4%。

质子入射In靶激发L系特征X射线的角分布研究

本论文实验测量并分析了发射角以10°为间隔,125°-155°范围内,入射能量为250 keV的质子束激发In靶产生的特征L系X射线谱,根据实验测得能谱结果,综合考虑探测器的探测效率后,计算了不同探测角度下特征X射线的相对强度比L_(ι)/L_(γ1);由相对强度比L_(ι)/L_(γ1)与二阶勒让德函数P_(2)(cosθ)之间的函数关系,发现特征X射线Lι在被测能量下呈各向异性发射,推得Lι特征X射线的各向异性参数β为-0.179±0.011,进而得到In靶L_(3)亚壳层的定向度A_(20)为-0.422±0.025,实验结果与理论预测一致.根据PWBA(Plane wave born approximation)模型和ECPSSR(Energy-loss coulomb-repulsion perturbed-stationary-state relativistic)模型,计算了250 keV质子入射下,In靶L亚壳层电离截面σ及Coster-Kronig跃迁矫正因子κ,在根据各向异性参数计算L_(3)亚壳层定向度的过程中考虑了Coster-Kronig跃迁的作用.分析认为本实验碰撞速度下,通过电子转移方式产生空穴的截面比直接电离小的多,所以没有对L_(3)亚壳层定向度进行电子转移因素的修正.

专精特新企业新产品开发绩效的组态效应研究——基于“能力-行为”匹配视角

专精特新企业对解决我国关键核心技术“卡脖子”问题具有重要意义,现有研究主要集中于创新机制和政策培育两方面,而新产品开发绩效作为专精特新企业可持续发展的重要途径,鲜有学者关注。为弥补现有研究不足,本文遵循“能力-行为”匹配视角,将数字化能力与服务化导向纳入同一研究框架,构建影响专精特新企业新产品开发绩效的组态效应模型。运用fsQCA方法对48家专精特新企业进行实证检验,检验结果表明:(1)数字化能力和服务化导向之间存在“多重并发”效应,可以通过4种不同的组合路径实现高新产品开发绩效;(2)将4种高新产品开发绩效组合路径进一步聚类,可归结为强数字化资源协调能力的能力拉动型和强产品导向服务化的服务推动型,这两种类型下数字化感知能力与客户导向服务化均具有替代效应。本文从“能力-行为”匹配视角丰富新产品开发绩效的前因组态,并为专精特新企业提升新产品开发绩效提供实践建议。