On Cultivating Students' Ability of Listening Comprehension in Senior High School in the Northwest of Guangxi

Nowadays, the role of listening course is changed and listening teaching begins to gain high priority in foreign language learning and teaching. However, the English level of students in China is still poor, especially in the northwest of Guangxi. One of the reasons is that teachers in senior high schools have a tendency to ignore listening, because they think that listening is time-consumed. They have to finish the teaching scheme punctually, though listening is the basic and important skill among the other three skills, listening teaching gains no large progress.

Combining Ability and Heterosis Between High Strength Lines and Transgenic Bt (Bacillus thuringiensis) Bollworm-Resistant Lines in Upland Cotton (Gossypium hirsutum L.)

To analyse the combining ability and heterosis between high-strength lines and transgenic Bt bollworm-resistant lines in upland cotton, 5 high-strength lines were crossed as female lines with 12 transgenic Bt bollworm-resistant lines according to NCII design. It was demonstrated that the compositions of variance in various traits were quite different. For seed cotton yield, lint yield, boll numbers per plant and boll weight, the dominant (special combining ability) effects were the major effects, accounting for 87.38, 84. 40, 80. 04 and 64. 46% of the total phenotypic variances, respectively, while for fibre strength and micronaire value, the additive (general combining ability) effects had the major effects, with a ratio of additive variance to phenotypic variance of 78.85 and 43.80%. As for lint percent and 2.5% span length, the dominant and additive variances had similar effects, in phenotypic variances (54.94 and 40.11% for lint percent, 45.76 and 42.49% for 2. 5% span length, respectively). The mid-parent heterosis (Hpm), surpassing parent heterosis (Hpb) and competitive heterosis (Hck) for seed cotton yield and lint yield were both extremely significant. For fibre properties, the Hck and Hpm of 2.5 % fibre span length were extremely significant, the Hck of fibre strength was significant, and the favorable negative Hck of micronaire was also extremely significant. The increments of hybrid over common variety were 17% for lint yield and fibre strength, 7% for fibre span length, and 4 % for fineness.

Genetic variability predicting breeding potential of upland cotton(Gossypium hirsutum L.)for high temperature tolerance

Background High temperature stress at peak flowering stage of cotton is a major hindrance for crop potential.This study aimed to increase genetic divergence regarding heat tolerance in newly developed cultivars and hybrids.Fifty cotton genotypes and 40 F1(hybrids)were tested under field conditions following the treatments,viz.,high temperature stress and control at peak flowering stage in August and October under April and June sowing,respectively.Results The mean squares revealed significant differences among genotypes,treatments,genotype×treatment for relative cell injury,chlorophyll contents,canopy temperature,boll retention and seed cotton yield per plant.The genetic diversity among 50 genotypes was analyzed through cluster analysis and heat susceptibility index(HSI).The heat tolerant genotypes including FH-Noor,NIAB-545,FH-466,FH-Lalazar,FH-458,NIAB-878,IR-NIBGE-8,Weal-AGShahkar,and heat sensitive,i.e.,CIM-602,Silky-3,FH-326,SLH-12 and FH-442 were hybridized in line×tester fashion to produce F1 populations.The breeding materials’populations(40 F1)revealed higher specific combining ability variances along with dominance variances,decided the non-additive type gene action for all the traits.The best general combining ability effects for most of the traits were displayed by the lines,i.e.,FH-Lalazar,NIAB-878 along with testers FH-326 and Silky-3.Specific combining ability effects and better-parent heterosis were showed by the crosses,viz.,FH-Lalazar×Silky-3,FH-Lalazar×FH-326,NIAB-878×Silky-3,and NIAB-878×FH-326 for seed cotton yield and yield contributing traits under high temperature stress.Conclusion Heterosis breeding should be carried out in the presence of non-additive type gene action for all the studied traits.The best combiner parents with better-parent heterosis may be used in crossing program to develop high yielding cultivars,and hybrids for high temperature stress tolerance.

Ferromagnetic Fe-based Amorphous Alloy with High Glass-forming Ability

A ferromagnetic amorphous Fe73Al4Ge2Nb1P10C6B4 alloy with high glass-forming ability was synthesized by melt spinning. The supercooled liquid region before crystallization reaches about 65.7 K. The crystallized structure consists of alpha -Fe, Fe3B, FeB, Fe3P and Fe3C phases. The Fe-based amorphous alloy exhibits good magnetic properties with a high saturation magnetization and a low saturated magnetostriction. The crystallization leads to an obvious decrease in the soft magnetic properties.

Study of the Influence of the Chunking on Improving Speaking Ability Among Senior High Students

English speaking skill is one of the most important skills that senior high students need to obtain in learning English.However,there are still many problems existing in students’speaking practice.As a teaching and learning strategy,Chunking is now gradually used in English classroom and has received a positive feedback.Therefore,in this paper,the influence of Chunking on improving English speaking skill among senior high school students will be investigated and analyzed through the methods of questionnaire and the follow-up interview to answer four questions:(1)What effect does Chunking have on the oral fluency of high school students?(2)What effect does Chunking have on the oral accuracy of high school students?(3)What effect does Chunking have on the vocabulary?And(4)Does the English speaking performance relate to genders?After analyzing the results of questionnaire by the SPSS and summing up the interview record,we found that most of them agree the fact that the strategy of Chunking does benefit their oral fluency,oral accuracy,and vocabulary.Also,female students have higher scores than male students.

Analysis of Yielding Ability and Yield Stability and Extension Prospect on New Maize Varieties in Jiangsu Province

[Objective] This study was conducted to select new hybrids with good ex- tension prospect, and to comprehensive assess various varieties and combinations from yielding ability, yield stability and adaptability. [Method] The yielding ability and yield stability of 5 varieties and 2 pioneer combinations in 5 test locations in Jiang- su Province in 2013-2015 were analyzed comprehensively. [Result] The environment effects and genotype x environment interaction effects of various tested varieties differed very significantly. It could be seen from various test locations that Mingyu 1301 and Sushi 51417 had very good yielding ability and yield stability, and were comprehensively assessed to be very good, Suyu 41 had very good yield stability and better yielding ability, and was comprehensively assessed to be good, while Suyu 29 and Suyu 39 showed instable yields in various locations and were greatly affected by environment, and thus should be planted in carefully-selected areas in extension. [Conclusion] This study provides theoretical foundation for breeding and extension of new varieties.

Effects of oxygen concentration and flow rate on cognitive ability and physiological responses in the elderly

The supply of highly concentrated oxygen positively affects cognitive processing in normal young adults. However, there have been few reports on changes in cognitive ability in elderly subjects following highly concentrated oxygen administration. This study investigated changes in cognitive ability, blood oxygen saturation （%）, and heart rate （beats/min） in normal elderly subjects at three different levels of oxygen [21% （1 L/min）, 93% （1 L/min）, and 93% （5 L/min）] administered during a 1-back task. Eight elderly male （75.3 ＋ 4.3 years old） and 10 female （71.1 ＋ 3.9 years old） subjects, who were normal in cognitive ability as shown by a score of more than 24 points in the Mini-Mental State Examination-Korea, participated in the experiment. The experiment consisted of an adaptation phase after the start of oxygen administration （3 minutes）, a control phase to obtain stable baseline measurements of heart rate and blood oxygen saturation before the task （2 minutes） and a task phase during which the 1-back task was performed （2 minutes）. Three levels of oxygen were administered throughout the three phases （7 minutes）. Blood oxygen saturation and heart rate were measured during each phase. Our results show that blood oxygen saturation increased, heart rate decreased, and response time in the 1-back task decreased as the concentration and amount of administered oxygen increased. This shows that administration of sufficient oxygen for optimal cognitive functioning increases blood oxygen saturation and decreases heart rate.

QTL mapping of general combining abilities of four traits in maize using a high-density genetic map

General combining abilities （GCAs） are very important in utilization of heterosis in maize breeding. However, its genetic basis is unclear. In the present study, a set of 118 doubled haploid （DH） lines were induced from F1 generations produced from the cross between the inbred line Zheng 58 and the inbred line W499 belonging to the Reid subgroup. Using the MaizeSNP50 BeadChip, a high-density genetic map was constructed based on the DH population which included 1 147 bin markers with an average interval length of 2.00 cM. Meanwhile, the DH population was crossed with three testers including W16-5, HD568, and W556, which belong to the Sipingtou subgroup. The GCAs of the ear height （EH）, the kernel moisture content （KMC）, the kernel ratio （KR）, and the yield per plant （YPP） were estimated using these hybrids in three environments. Combining the high-density genetic map and the GCAs, a total of 14 QTLs were detected for the GCAs of the four traits. Especially, one pleiotropic QTL was identified on chromosome 1 between the SNP SYN16067 and the SNP PZE-101169244 which was simultaneously associated with the GCAs of the EH, the KR, and the YPP. These QTLs pave the way for further dissecting the genetic architecture underlying GCAs of the traits, and they may be used to enhance GCAs of inbred lines under the fixed heterotic pattern ReidxSipingtou in China through a marker-assisted selection approach.

Analysis on the Breeding and Major Traits of Wide-adaptability Indica CMS Line Yungu 3A

Breeding sterile lines is the key to the development of hybrid rice with wide adaptability. However, at present, few wide-adaptability sterile lines have been applied in production practice. In this study, Yungu 3A, a new WA-type Indica CMS line with good grain quality, was developed by hybridization between Yunfeng 66A with wide adaptability as female parent and F1 plants of Yunfeng 66B/D62B as male parent and continuous backcrossing. According to the results, the finally obtained lndica CMS line Yungu 3A has good plant type and leaf shape, strong tillering ability, excellent flowering habit, stable and complete male sterility with the sterile plant rate and pollen sterility rate of 100%, strong combining ability, high outcrossing rate, low sensitivity to light and temperature, and strong disease resistance, which was approved by Yunnan Provincial Crop Variety Appraisal Committee in 2013. Yungu 3A is conducive to the development of new hybrid rice combinations with good quality and wide adaptability, exhibiting a promising prospect of application.

Combining ability for main quality traits in peanut(Arachis hypogaea L.)

High-oleic peanuts has been recognized by processing sectors,seed sellers and consumers for their longer shelf life,longer seed life and mutiple healthe benefits.High oleate is becoming a requisite for varietal releases in many peanut breeding programs at present.To select desirable parents for high-oleic peanut breeding,the study was conducted to evaluate the combining ability of 5 high-oleic donors from our research team,based on quality of individual single seeds.General combining ability was significant for oleic,linoleic,stearic and palmitic acid,oil and protein,while specific combining ability was significant for the traits except oil.Among them,oil content was found to be conditioned solely by additive gene actions,and for other quality traits,additive gene effects were more important than non-additive gene effects.High-oleic CTW and normal-oleic Xiaojingsheng were selected as the best general combiners for peanut oleic acid improvement.Narrow-sense heritability was high for quality traits other than protein,suggesting that there was high potential for genetic improvement in these traits.

Highly plastic Zn-0.3Ca alloy for guided bone regeneration membrane:Breaking the trade-off between antibacterial ability and biocompatibility

A common problem for Zn alloys is the trade-off between antibacterial ability and biocompatibility.This paper proposes a strategy to solve this problem by increasing release ratio of Ca^(2+)ions,which is realized by significant refinement of CaZn13 particles through bottom circulating water-cooled casting(BCWC)and rolling.Compared with conventionally fabricated Zn-0.3Ca alloy,the BCWC-rolled alloy shows higher antibacterial abilities against E.coli and S.aureus,meanwhile much less toxicity to MC3T3-E1 cells.Additionally,plasticity,degradation uniformity,and ability to induce osteogenic differentiation in vitro of the alloy are improved.The elongation up to 49%,which is the highest among Zn alloys with Ca,and is achieved since the sizes of CaZn_(13) particles and Zn grains are small and close.As a result,the long-standing problem of low formability of Zn alloys containing Ca has also been solved due to the elimination of large CaZn_(13) particles.The BCWC-rolled alloy is a promising candidate of making GBR membrane.

Highly Efficient Organic Ultraviolet Photodetectors Based on Re(I) Complexes

High response organic ultraviolet photodetectors（UV-PDs） were demonstrated with 4,4＇,4”- tris[3-methyl-pheny（phenyl）amino]triphenylamine（m-MTDATA） and two Re（Ⅰ） complexes, （bathocuproine）- Re（CO）3CI（Re-BCP） and （bathophenanthroline）Re（CO）3Cl（Re-Bphen） to act as the electron donor and acceptor, re- spectively. UV-PDs have the configuration of indium tin oxide（ITO）/m-MTDATA（25 nm）/m-MTDATA：Re-complex （25-35 nm）/Re-complex（20 nm）/LiF（l nm）/Al（200 nm） with different blend layer thicknesses of 25, 30 and 35 nm. The optimized PD based on Re-Bphen offers a corrected-dark photocurrent up to 760μA/cm^2 at -10 V, corresponding to a response of 310 mA/W which is among the best values reported for organic UV-PDs. Excellent electron transport ability makes for such high photo-to-electron conversion.

Evaluation of spectral domain optical coherence tomography parameters in discriminating preperimetric glaucoma from high myopia

AIM: To evaluate the diagnostic ability of macular ganglion cell-inner plexiform layer(GCIPL) thickness o b t a i n e d b y s p e c t r a l-d o m a i n o p t i c a l c o h e r e n c e tomography(SD-OCT) in discriminating non-highly myopic eyes with preperimetric glaucoma(PPG) from highly myopic healthy eyes. METHODS: A total of 254 eyes, including 76 normal controls(NC), 116 eyes with high myopia(HM) and 62 non-highly myopic eyes with PPG were enrolled. The diagnostic ability of OCT parameters was accessed by the areas under the receiver operating characteristic(AUROC) curve in two distinguishing groups: PPG eyes with nonglaucomatous eyes including NC and HM(Group 1), and PPG eyes with HM eyes(Group 2). Differences in diagnostic performance between GCIPL and RNFL parameters were evaluated. RESULTS: The minimum(AUROC curve of 0.782), inferotemporal(0.758) and inferior(0.705) GCIPL thickness were the top three GCIPL parameters in discriminating PPG from non-glaucomatous eyes, all of which had statistically significant lower diagnostic ability than average RNFL thickness(0.847). In discriminating PPG from HM, the best GCIPL parameter was minimum(0.689), statistically significant lower in diagnostic ability than average RNFL thickness(0.789) and three other RNFL thickness parameters of temporal and inferotemporal clock-hour sectors. CONCLUSION: The minimum GCIPL thickness is the best GCIPL parameter to detect non-highly myopic PPG from highly myopic eyes, whose diagnostic ability is inferiorto that of average RNFL thickness and RNFL thickness of several temporal and inferotemporal clock-hour sectors. The average RNFL thickness is recommended for discriminating PPG from highly myopic healthy eyes in current clinical practice in a Chinese population.

Observation of the effect of one-to-one education on high-risk cases of diabetic foot

BACKGROUND Diabetes is a common chronic disease,and its global incidence is on the rise.The disease is directly attributed to insufficient insulin efficacy/secretion,and patients are often accompanied by multiple complications.Diabetic foot is one of the most common complications of diabetes.Diabetic feet have ulcers and infections,which can eventually lead to amputation.Basic nursing care,such as lowering blood pressure and preventing foot skin infections in clinical nursing work,has positive significance for the prevention and control of diabetic feet.AIM To explore the positive significance of one-to-one education in high-risk cases of diabetic foot.METHODS This observation included 98 high-risk cases of diabetic foot in our hospital during the period from August 2017 to October 2019,and these patients were randomly divided into the basic nursing group and the one-to-one education group with 49 patients per group.The basic nursing group only received routine basic nursing,while the one-to-one education group gave patients one-to-one education on the basis of basic nursing.After nursing,the self-care ability and compliance behavior of the two groups were evaluated and compared between these two groups.The knowledge mastery of the patient and the satisfaction of nursing were accounted.RESULTS The assessment results of patients(self-care responsibility,self-care skills,selfconcept and self-care knowledge)were significantly higher in the one-to-one education group than in the basic nursing group.The scores of compliance behaviors(foot bathing,shoes and socks selection,sports health care)in the oneto-one education group were significantly higher than those in the basic nursing group.Patients in the one-to-one education group had a significantly higher level of knowledge mastery and satisfaction of nursing than the basic nursing group.CONCLUSION One-to-one education for high-risk cases of diabetic foot is helpful to improve the cognition and self-care ability of patients with diabetic foot,to ensure that patients follow the doctor’s advice of self-care and to improve their nursing satisfaction.

Analysis on the Physical Characteristics of High-level Football Players

This article uses the literature data method and literature review method to review and collect relevant literature,and summarizes and analyzes the representative views on domestic physical fitness research.After summarizing and summarizing,it is considered that:physical energy is the basic athletic ability of the human body expressed through physical qualities such as strength,speed,endurance,coordination,flexibility,and sensitivity,and is an important component of athletes'athletic ability.The level of physical fitness is closely related to the morphological characteristics of the human body and the functional characteristics of the human body.The morphological characteristics of the human body are the structural basis of its physical fitness,and the functional characteristics of the human body are its biological functional basis.As the basic ability of athletes,physical fitness is an important factor of athletes'competitive ability.Each competitive sport has its own specific physical characteristics and training rules and methods.Grasping these laws has very important guiding significance for the improvement of athletes'sports level.

A Study of Listening Teaching Methods in High School English Curriculum

Listening is the prerequisite and foundation of four language skills—listening, speaking, reading and writing. It is very important in high school English learning. But teachers or students seldom focus listening in English curriculum. This thesis analyzes the problems of English listening process and puts forward effective teaching methods to improve students' listening comprehension ability.

“双一流”背景下地方高校化工类研究生培养模式研究与实践

在“双一流”建设背景下,提升研究生培养质量成为重中之重。同时,地方高校也要主动应对“双一流”建设对研究生教育带来的新机遇和新挑战。该文深入分析目前地方高校研究生培养现状和存在的主要不足,利用该校山东省化学工程与技术优势特色学科的建设契机,提出通过重构多元课程体系、创新教学模式和构建基于新型导学关系的培养模式,实现突出学科特色的研究生复合型创新人才培养目标。通过上述举措的探索与实践,研究生的科研创新能力和综合素质不断提高,专业影响力不断提升。

Z世代的新质生产力特质与评价研究——基于“能力-意愿”的代际比较

加快形成新质生产力是我国经济发展战略重要组成部分,高质量人力资本是重要的新质生产力。Z世代逐渐成为劳动力市场主体,以要素和协作两种形式创造新质生产力。本文以马克思劳动价值论为基础构建以劳动为变量的生产力跨期模型,根据经济学、社会学相关理论和“三新”经济统计数据有关内容,构建劳动“能力-意愿”评价指标体系,并从2021年中国社会状况综合调查(CSS)结果中提取劳动相关指标数据,将其代入生产力跨期模型比较不同世代群体的新质生产力水平。结果显示:在能力维度方面,Z世代群体具有更多高等学历受教育程度经历、更多参加专业领域内职业技能培训、更高频次使用互联网进行商务和工作、更高比例从事专业技术和新兴产业工作等高质量人力资本特征,以要素形式创造更多的新质生产力,并通过“七普”数据、教育信息化发展实践现状和信息产业就业情况等证据给予证实;在参与创造新质生产力意愿方面,Z世代群体表现出较高的社会服务参与热情,但对人与人关系的信任水平偏低,这可能会降低劳动的协作生产力。最后,从能力和意愿两方面给出Z世代群体创造更多新质生产力的建议。

面向工科高层次创新人才培养的导师能力提升研究

高层次创新人才培养需要优秀的研究生导师来实现,而导师能力的提升也是高层次创新人才培养的必要条件。该研究分析导师能力提升的困境,构建针对工科高层次创新人才培养的导师能力体系,并提出有效的导师能力提升路径。这些路径包括创新导师遴选机制、提高导师立德树人实效性、建立高效的导师培训机制以及构建跨学科导师交流机制。通过这些措施,期望提高导师的指导水平,促进研究生创新能力的培养,为高等教育改革提供参考借鉴。

基因型与高温环境互作对杂交水稻整精米率的影响

为了提高高温伏旱区水稻的整精米率,以3个不育系(椰香A、沪旱82S、川康606A)与5个恢复系(泸恢107、泸恢127、泸恢276、泸恢1156、泸恢6150)配制的15个杂交中籼组合为材料,分别于2021、2022年早季和晚季种植,稻谷收获后分别采用40℃和80℃干燥,研究杂交水稻基因型与环境互作对整精米率的影响。结果表明,水稻生长期温度和稻谷干燥温度对整精米率的影响大,2021年水稻灌浆期气温正常,其整精米率(平均48.92%)比2022年(平均17.39%,罕见高温年景)高181.00%,稻谷干燥温度40℃处理平均整精米率(45.94%)比80℃处理(20.37%)高125.00%;恢复系对整精米率影响次之,泸恢6150所配组合整精米率最高,平均比其他恢复系所配组合高13.85%~25.34%;不育系对整精米率影响较小,其中椰香A所配组合整精米率最高,平均比其他不育系所配组合高8.97%~9.45%;不育系与恢复系的特殊配合力对整精米率影响较大,恢复系的一般配合力显著高于不育系。种植季节对整精米率影响最小,晚季种植比早季种植整精米率仅高2.97%。通过恢复系改良选择对整精米率特殊配合力高的杂交组合,使其处于适宜灌浆期温度下,并采用适宜的温度干燥稻谷,有利于大幅度提高整精米率。