Effect of Co on Solidification Characteristics and Microstructural Transformation of Non-equilibrium Solidified Cu-Ni Alloys

Non-equilibrium solidification structures of Cu55Ni45 and Cu55Ni43Co2 alloys were prepared by the molten glass purification cycle superheating method.The variation of the recalescence phenomenon with the degree of undercooling in the rapid solidification process was investigated using an infrared thermometer.The addition of the Co element affected the evolution of the recalescence phenomenon in Cu-Ni alloys.The images of the solid-liquid interface migration during the rapid solidification of supercooled melts were captured by using a high-speed camera.The solidification rate of Cu-Ni alloys,with the addition of Co elements,was explored.Finally,the grain refinement structure with low supercooling was characterised using electron backscatter diffraction(EBSD).The effect of Co on the microstructural evolution during nonequilibrium solidification of Cu-Ni alloys under conditions of small supercooling is investigated by comparing the microstructures of Cu55Ni45 and Cu55Ni43Co2 alloys.The experimental results show that the addition of a small amount of Co weakens the recalescence behaviour of the Cu55Ni45 alloy and significantly reduces the thermal strain in the rapid solidification phase.In the rapid solidification phase,the thermal strain is greatly reduced,and there is a significant increase in the characteristic undercooling degree.Furthermore,the addition of Co and the reduction of Cu not only result in a lower solidification rate of the alloy,but also contribute to the homogenisation of the grain size.

Ecological Coupling Analysis and Genetic Effect Evaluation of Quantitative Characters in Lonicera edulis

Lonicera edulis is a perennial berry shrub that prefers the cold and wet climate, with high nutritional and medicinal value. In this study, ecological cou- pling capability of L. edulis with light, heat, water and soil resources in cold regions was investigated to analyze comprehensively ecological effects of quantitative characters and genetic effects of parents, aiming at providing a theoretical basis for the breeding, introduction and domestication of fine varieties of L. edulis in cold regions of China. The results showed that fruit characters in L. edulis exhibited certain variations among different habitat types. To be specific, fruit vertical diame- ter varied slightly, fruit horizontal diameter varied greatly and seed number varied maximally, with the average variance coefficients of 9.38%, 11.92% and 20. 64%, respectively; in addition, fruit characters in L. edtdis exhibited moderate herilability, moderate genetic gain and low level of genetic differentiation; the heritability of fruit vertical diameter, fruit horizontal diameter and seed number was 0.825, 0. 559 and 0. 627, respectively; the genetic gain of these three fruit characters was 7.53%, 5.72% and 11. 94%, respectively, resulting in significant economical benefits.

The Effect of Spatial Structure Character of Heat Source on the Ray Path and the Evolution of Wave Energy of Meridional Wave Train

This paper studies correlations between the spatial structure character of thermal forcing and deformation and the amplitude of rays of meridional wave train. It is shown that if thermal forcing appears a meridional linear variation the rays of quasi-stationary planetary wave may propagate along oblique lines and if the meridional variability of heat source has second order term the rays show distinct deformation as a great circular route. Additionally, the inhomogeneous distribution may cause lower frequency oscillations in mid- and low-latitudes. The combination of zonal and meridional wave numbers and distributive character of heat source may form an inverse mechanism of variational trend of generized wave energy, reflecting in some degree the physical process of transition between meridional and zonal flow patterns.

The effect of dehydration on plant regeneration and some physiology characters in rice calli

The plant regeneration frequencies of ealli fromplant tissue and cell culture,especially that of thecalli from rice tissue culture and rice anther cul-ture,and that of the foreign-DNA-transfor-mation-derived rice calli is very low(usually 10-15%).It is therefor very important to improve theplant regeneration frequency of rice calli.A1-

Analysis of seed and maternal genetic effects on cooking quality characters in indica hybrid rice

We analysed seed and maternal genetic effects on characters of cooking quality in indica hybrid rice by using the model for quantitative characters of seeds of cereal crops. Incomplete diallel crosses were made by using six male sterile lines (Zhenshan 97A, Erjiuqing A, Erjiunan 1A, V20A, Zhe’nan 1A and Zhe’nan 3A)as females and three restorer lines(Cezao 2-2, T49 and 26715)as males. Sampled seeds were used to measure the cooking quality characters, including amylose content(%), gelatinization temperature(alkali spreading score)and gel consistency(mm). Results indicated that some rice cooking quality characters were controlled by both seed genes and maternal genes (see table). Gel consistency was mainly controlled by maternal effects, but also

Effects of Key Agricultural Measures of Mechanized Direct Seeding Technology on Rapeseed Yield in Chengdu Plain

Mechanized direct sowing of rapeseed is a labor-saving and highly-efficient culture technique. In order to explore high-yield cultivation techniques suitable for Chengdu Plain, effects of several key agronomic measures＇, such as sowing date, density and N fertilizers, on development and yield formation were studied by strip and split plot experiment of three factors. The research showed that optimal condi- tions for direct seeding technology can be achieved provided with scientific sowing date, density and appropriate N fertilizers, and the research showed that rapeseed yield reached the peak at 320 g/m2, when sowing date was on September 3th, sow- ing density was 30 plant/m2, and nitrogen fertilizer was 27 g/m2.

Effectiveness of Acupoint Application in Patients with Pharyngeal Pain: Evidence from CHUNBO, A Prospective Real-World Study

Objective: To assess the outcomes after acupoint application in patients with pharyngeal pain in a real-world settings, and analyze the characteristics of effective population and prescription characteristics of acupoint application. Methods: Based on CHUNBO platform, patients with pharyngeal pain who were candidates for acupoint application on the basis of physician-evaluation, were enrolled in a nationwide, prospective, 69-week multicenter observational study from August 2020 to February 2022. Propensity score matching(PSM) was used to match the confounding factors and the association rules were used to analyze the characteristics of effective population and prescription characteristics of acupoint application. Outcome assessments included the disappearance rate of pharyngeal pain(within 3, 7, and 14 days), disappearance time of pharyngeal pain, as well as adverse events. Results: Of 7,699 enrolled participants, 6,693(86.9%) received acupoint application and 1,450(21.7%) with non-acupoint application. After PSM, there were 1,004 patients each in the application group(AG) and non-application group(NAG). The disappearance rate of pharyngeal pain in the AG at 3, 7, and 14 days were all higher than those in the NAG(P<0.05). The disappearance time of pharyngeal pain in the AG were shorter than that in the NAG(logrank P<0.001, hazard ratio=1.51, 95% confidence interval: 1.41–1.63). The median age of effective cases was 4 years, mainly 3–6 years old(40.21%). The disappearance rate of pharyngeal pain in the application group with tonsil diseases was 2.19 times higher than that in the NAG(P<0.05). The commonly used acupoints for the effective cases were Tiantu(RN 22), Shenque(RN 8) and Dazhui(DU 14). The commonly used herbs for the effective cases were Natrii sulfas, Radix et Rhizoma Rhei, and Herba Ephedrae. Among them, Natrii sulfas was applied to RN 8 most frequently(support 84.39%). A total of 1,324(17.2%) patients experienced AEs, and mainly occurred in the AG, with significant difference in the incidence of AEs between goups(P<0.05). All AEs reported were the first grade, and the average regression time of AEs was 2.8 days. Conclusions: Acupoint application in patients with pharyngeal pain resulted in improved effective rate and shortened duration, especially children aged 3–6 years old, and those with tonsil diseases. Acupoint of RN 22, RN 8 and DU 14, herbs of Natrii sulfas, Radix et Rhizoma Rhei, and Herba Ephedrae were the most commonly used in the treatment of pharyngeal pain.

不同出芝方式对灵芝农艺性状及有效成分含量的影响

【目的】研究不同出芝方式对灵芝农艺性状及子实体有效成分粗多糖、总三萜化合物含量的影响,探索适合吉林延边地区大棚代料栽培灵芝的方法。【方法】以两个赤灵芝菌株GL1和GL2为研究材料,采用层架摆放和直立地摆等两种出芝方式,在大棚内进行代料栽培试验。【结果】在大棚内以层架摆放栽培的灵芝子实体,表现为菌盖较大、菌柄较短、分枝少的特点,而直立地摆栽培的灵芝子实体菌柄较长、分枝较多;直立地摆的灵芝产量和干芝转化率均高于层架摆放;层架摆放子实体的粗多糖含量高于直立地摆,总三萜含量低于直立地摆。【结论】综合分析,不同出芝方式对灵芝的农艺性状和子实体有效成分含量影响显著,因此在进行灵芝栽培时应根据需求选择最佳的出芝方式。

学校氛围对中职生幸福感的影响:积极心理品质的中介效应

采用学校氛围问卷、幸福指数量表、中国中小学生积极心理品质量表对1427名中职生进行测试,以探索学校氛围对中职生幸福感的影响以及积极心理品质的中介作用。结果显示,学校氛围、积极心理品质、幸福感彼此之间均呈显著正相关;积极心理品质在学校氛围与中职生幸福感之间起部分中介作用。以此得出,学校氛围一方面直接影响中职生幸福感,一方面通过积极心理品质间接影响中职生幸福感。

基于数据挖掘与味-性-效理论的藏医药浴法组方配伍规律分析

目的:挖掘分析药浴文献方剂的核心用药规律,为人类非物质文化遗产藏医药浴临床应用及学术研究提供科学系统的数据支持。方法:选取《藏医药大典》(60本)等藏医药古籍文献为研究对象,搜集整理藏医药浴相关的有效数据元,运用SPSS Modeler18.0、SPSS Statistics 25.0、Gephi0.9.2软件采用描述统计、Apriori算法、聚类分析、复杂网络等方法,挖掘药浴方剂配伍规律。结果:在符合标准的409首方剂中,组方药物数量2~10味者占84%,按主要组方药物可分为五味甘露卡擦尔方与其他方剂两大类型;共涉及藏药材284味,其中坎巴、藏麻黄、秀巴等五味甘露组方药物频次及关联最高;聚类分析得出7种组合,疏经通络类、干黄水类、清热类、调和滋补类、消肿类、化脓类等不同功效结构的药对组合,可为不同证型用药提供参考。药物6味主要以甘、苦、辛,3化味以苦、甘,3性以凉、温居多,17效以钝、凉、重、糙等居多。主治功效以肿胀、白脉病等频次最高。结论:药浴方剂种类丰富、应用广泛,其中五味甘露卡擦尔方最常见,卡擦尔方体现了因人、因病施治的辨证论治原则,并挖掘出了多种常用药物组合及临床失传的方剂类型,对药浴临床应用及学术研究具有参考意义。

高能重离子束辐射对黄芪幼苗的生物学效应研究

为了探讨不同剂量高能重离子束辐射对中药材黄芪幼苗的生物学效应以及黄芪重离子束辐射诱变育种的推荐剂量,利用不同剂量的重离子束辐射7日苗龄的黄芪幼苗,在辐射后第10天测定了存活率、幼苗高度、叶片数、茎秆直径、鲜根重和叶形态参数;辐射后第20天起,每隔20 d测量叶片中叶绿素含量、叶绿素荧光参数、抗氧化酶活性和氧化指数。结果表明,随辐射剂量的增加,黄芪幼苗的存活率、株高和鲜根重相对于对照组都有所下降。5和10 Gy辐射后,鲜根重量分别减少31.80%和49.99%。辐射组幼苗的第1和第2分枝的叶片出现畸形、萎缩和形态损伤。辐射后第20天,辐射组的活性氧、膜质过氧化物和叶绿素含量与对照组相比显著下降,而辐射后第60天,与对照组相当。辐射后,除最大光化学效率(F_(v)/F_(m))略有增加外,黄芪幼苗的叶绿素荧光参数均有所下降。本研究结果表明:随重离子束辐射剂量的增加,黄芪幼苗的生长发育受到抑制;辐射后随着植株的生长,辐射对生长的抑制作用有所缓解;推荐的诱变剂量区间为10 Gy左右。本研究结果为黄芪高能重离子束辐射诱变育种提供了必要的基础数据。

6种除草剂对洋葱幼苗田间杂草防治效果及安全性评价

为探究不同除草剂对洋葱幼苗田杂草的防效以及对洋葱幼苗生长发育的影响,并为除草剂在洋葱育苗田的安全使用提供依据,采用土壤和茎叶喷雾法,测定30%辛酰溴苯腈乳油(EC)、30%烯草酮EC、20%精喹禾灵EC、70%2,4-滴二甲胺盐水剂(AS)这4种苗后除草剂以及55%乙氧·异·甲戊EC和330 g/L二甲戊灵EC这2种土壤封闭除草剂对洋葱幼苗的室内安全性、田间除草效果及对生长的影响。结果表明,6种不同除草剂对洋葱幼苗的室内安全性存在差异,30%辛酰溴苯腈EC、30%烯草酮EC和20%精喹禾灵EC等3种药剂对洋葱幼苗无药害或只有极轻微药害,洋葱叶片和植株生长正常;70%2,4-滴二甲胺盐AS处理产生3级药害;55%乙氧·异·甲戊EC对出苗率影响小,后期幼苗生长健壮;330 g/L二甲戊灵EC对出苗率影响较大,并产生了1~2级的药害。6种不同除草剂对洋葱幼苗田间杂草株防效存在差异,30%辛酰溴苯腈EC药后35 d对灰绿藜和荠等双子叶的鲜重防效均高于90%,50 d对上述双子叶杂草的鲜重防效均高于70%;70%2,4-滴二甲胺盐AS对各类杂草的鲜重防效均较差;30%烯草酮EC和20%精喹禾灵EC对狗尾草、稗、菵草等禾本科杂草鲜重防效好,前者35 d内效果良好,后者更长效;55%乙氧·异·甲戊EC作为苗期封闭能够较好地抑制各类杂草的生长,35 d洋葱幼苗生长矮状,50 d洋葱幼苗生长较CK健壮;330 g/L二甲戊灵EC封闭抑制效果不及55%乙氧·异·甲戊EC,且对洋葱幼苗生长产生抑制,不宜使用。综上,用药量为1125 mL/hm 230%辛酰溴苯腈EC对双子叶杂草防效好,用药量分别为480、255 mL/hm 2的30%烯草酮EC、20%精喹禾灵EC对禾本科杂草防效好,用药量为1650 mL/hm 2的55%乙氧·异·甲戊EC可作为苗期封闭药使用,可起到安全较好的除草效果。

双字词的形态结构对汉字位置信息编码的影响

字母转置效应是指颠倒单词的字母位置后,读者仍可识别目标词的现象,表明字母位置信息编码具有一定的灵活性。近年来,研究者通过对比不同形态结构词语的字母转置效应,探讨词语的认知加工方式。本研究采用眼动追踪技术,结合边界范式考察了不同形态结构双字词的汉字位置信息编码。研究结果显示,偏正复合词的汉字转置效应小于并列复合词和单语素词,而并列复合词和单语素词之间没有显著差异。结果表明,与偏正复合词相比,单语素词和并列复合词的汉字位置信息编码更为灵活,表明词语的形态结构会对汉字位置信息编码产生不同的影响,支持了形态复杂词的双通路加工理论。

雪茄烟楚雪10号施肥效果及推荐施肥量研究

为探究雪茄烟楚雪10号品种的适宜氮、磷、钾肥用量,采用田间“3414”试验,研究不同氮、磷、钾肥料处理对雪茄烟楚雪10号农艺性状及产量的影响。结果表明:施肥可不同程度提高雪茄烟株高、茎粗、叶长、叶宽、有效叶片数等农艺性状,且雪茄烟对氮的依赖性最强,施氮能显著提高雪茄烟单位面积产量,而磷、钾对雪茄烟产量影响不明显;氮、磷、钾对雪茄烟产量的影响有互作效应,低磷、中钾水平利于氮肥效果的发挥,中氮、低钾水平利于磷肥效果的发挥,中磷、低氮水平利于钾肥效果的发挥;根据产量和农艺性状等得出最大产量下的施肥量为纯N 180 kg/hm^(2)、P2O560 kg/hm^(2)、K2O 360 kg/hm^(2)。说明适当控制氮肥和钾肥施用量,增加磷肥施用量,同时将三者进行合理配比,对提高雪茄烟产量有重要意义。

桃仁性味、归经及功效演变的本草考证

本文通过查阅历代本草医籍并结合现代文献材料,对桃仁的性味、归经和功效演变进行了系统的梳理与考证。考证结果发现桃仁性味、归经的论述古今确有差异:唐代以前,桃仁味苦、甘、辛,性平、温、热,无毒、双仁者有毒、微毒均有记载,元代首次出现桃仁的归经问题,直至现代桃仁的性味、归经才趋于统一,即苦、甘,平,有小毒,归心、肝、大肠经;在功效演变方面,古今皆用的功效有破血逐瘀、止咳逆、润肠燥。古存今失的功效有辟鬼除邪、杀虫、祛风除蒸等。该研究结果为今后桃仁的深入研究、开发利用等提供本草学依据。

林下参与园参性状鉴别、化学成分及药理作用差异研究进展

林下参与园参是人参交易市场上最主要的两类品种,但二者仍存在较大差异。目前市场上二者鱼目混杂,外观形态鉴别最为简便但可靠性并不高。本文通过对近年来国内外公开报道的林下参和园参的研究进行对比,从性状鉴别技术、化学成分及药理作用等方面进行总结。系统对比其形态、显微、无损鉴别等主要特征的差异,以期为林下参与园参的质量评价与合理开发利用提供借鉴。

出勤主义在精神专科护士品格优势与职业发展观的中介作用

目的了解临床护士职业发展观现状,探讨出勤主义在精神专科护士品格优势与职业发展观间的中介作用,为提高护士职业发展观提供参考。方法2023年7月—8月,采取方便抽样法,选取芜湖市某三级甲等精神专科医院护士为研究对象,采用一般资料调查表、出勤主义量表、品格优势量表及职业发展观量表对268名研究对象进行问卷调查。结果护士职业发展观得分为(127.35±16.87)分;品格优势与出勤主义呈负相关(r=-0.376,P<0.05),与职业发展观呈正相关(r=0.447,P<0.05);出勤主义部分中介品格优势和职业发展观间的关系,中介效应占总效应的51.92%。结论精神专科护士的品格优势不仅能直接预测职业发展观,还能通过出勤主义的中介作用对职业发展起间接预测作用。

服装色彩搭配在舞台人物造型设计中的应用研究

在舞台人物造型设计中,通过服装色彩的选择和搭配,可以传达情节与故事线索,凸显角色性格特点并营造舞台效果。本文探讨了服装色彩搭配在舞台人物造型设计中的应用,以传达情节与故事线索、凸显角色性格和营造舞台效果为重点。在情节与故事线索的传达方面,服装色彩可以借助情感转折点和角色内心变化,突出情绪和故事发展的关键节点。角色性格的凸显则通过不同色彩的象征意义与角色特质对应,以及利用服装色彩搭配强调或缓和角色性格特点来实现。在舞台人物造型设计中,设计师需要综合运用这些要素,以创造出富有艺术表现力的舞台呈现,使观众更深刻地理解和感受角色及剧情。

IK与FK系统在角色动画设计中的应用研究

本文研究了IK与FK系统在角色动画设计中的应用,分析两种系统的基本原理和实现方式,探讨它们在不同动画设计情景中的适用性,比较它们的性能和实用性,并通过案例分析验证了两种系统的效果与难度。研究发现,IK系统在人物行走、手部和足部动作设计以及躯干变形动画设计方面具有优势;而FK系统在肢体活动、器械操作以及表情和面部动画设计方面具有优势。最后,根据研究结果提出了选择IK或FK系统的依据和建议。

灵活运用视听媒体 提高学校德育实效

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