Proteomic Identification of Rhythmic Proteins in Maize Seedling Leaves

Plant leaves respond to day/night cycling in a number of physiological ways. At the mRNA level, the expression of some genes changes during the 24 h period. To determine which proteins exhibited a rhythmic pattern of expression, proteomic profiles in maize seedling leaves were analyzed by high-throughput two-dimensional gel electrophoresis, combined with MALDI-TOF MS technology. Of the 464 proteins that were detected with silver staining in a pH range of 4-7, 17 （3.66%） showed clock rhythmicity in their abundance. These proteins belonged to diverse functional groups and proteins involved in photosynthesis and carbon metabolism were over-represented. These findings provide a new perspective on the relationship between the physiological functions of leaves and the clock rhythmic system.

Training session intensity affects plasma redox status in amateur rhythmic gymnasts

Purpose:The aim of this study was to examine systemic responses of oxidant/antioxidant status following 2 training sessions of different intensity in amateur rhythmic gymnasts.Methods:Before the experimental training,10 female gymnasts performed a gradually increased exercise test to assess maximal heart rate,maximal oxygen consumption,and anaerobic threshold.They executed 2 intermittent training sessions separated by 48 h of recovery(48 h-post R):the first was performed at low-moderate intensity(LMI)and the second at high intensity(HI).Blood samples were collected immediately preand post-training and 48 h-post R.Hydroperoxide level(OxL)and total antioxidant capacity(TAC)were photometrically measured.Results:OxL was significantly higher in post-training and 48 h-post R following HI than the same conditions after an LMI session(HI vs.LMI post-training:381.10±46.17(mean±SD)vs.344.18±27.94 Units Carratelli(U.CARR);48 h-post R:412.21±26.61 vs.373.80±36.08 U.CARR).There was no change in TAC between the 2 training sessions investigated.In LMI training,OxL significantly decreased in post-training and increased to reach the baseline at 48 h-post R,whereas TAC increased only at 48 h-post R.In HI training,OxL significantly increased to reach a high oxidative stress 48 h-post R,whereas TAC was lower in post-training than pre-training.Conclusion:The pattern of OxL and TAC levels implies different regulation mechanisms by HI and LMI training sessions.High oxidative stress induced by an HI protocol might be associated with both insufficient TAC and recovery time at 48 h necessary to restore redox balance.

Recent Activity of the Badu-Longwei Segment,Guguan-Xiangong Fault in Southern Liupanshan,Constrained by Rhythmic Sediment Lithology and Geomorphic Characteristics

This study＇s objective was to investigate the Guguan-Xiangong Fault, which lies in the southern Liupanshan area, through satellite image interpretation and field observations. Guguan- Xiangong Fault is divided into five subsegments; among these, the Badu-Longwei segment has been the most recently active. The geomorphic features of the Badu-Longwei segment are clearly displayed, including multiple high fault scarps with fresh bedrock free faces. There is significant evidence for Holocene activity of the three fault sections, located in Renhuashu, Tianjiagou, and Xinjiecun respectively. The three sections feature distinct episodic deposition and fault scratches. Based on 14C- dating and field observations on the three fault sections, two or more paleoearthquakes across the Badu-Longwei fault segment are ascertained, between 5874±116 and 5430±140 a BP, and after 2037±83 a BP respectively. The Badu-Longwei segment of the Guguan-Xiangong Fault is preliminarily extrapolated as the seismogenic structure of the 600 A.D. Qin-Long earthquake.

Effects of adaptation to handling on the circadian rhythmicity of blood solutes in Mongolian gerbils

The Mongolian gerbil has been widely used in many research fields and has been reported to be a diurnal laboratory animal. The circadian rhythmicity of these gerbils was investigated in the present study by measuring two hormones that show daily oscillations, cortisol and ACTH, in serum using ELISA kits. The levels of the two hormones were highest at 8:00 am and their rhythmic changes were similar to those in humans. In addition, the influence of stress of handling and blood collection on the physiological parameters of the gerbils was examined. After adaptation to handling for 1 week, some serum parameters in the animals changed. Handling and blood collection did not impact significantly on the following parameters: creatine kinase (CK), lactate dehydrogenase (LD), alanine aminotransferase (ALT), aspartate transaminase (AST), blood urea nitrogen (BUN), and albumin (ALB). However, blood glucose (GLU), total protein (TP) and globulin (GLB) significantly increased while creatinine (CRE) and albumin/globulin (A/G) significantly decreased after adaptation. This work further confirms that the Mongolian gerbil is a diurnal animal and also indicates that a suitable adaptation procedure is necessary for getting reliable results when performing experiments using these animals.

Rhythmic and Spоradic Changes in the Rate of Beta Decays: Possible Reasons

In a number of experiments, when detecting particles emitted in beta decays, periodic oscillations of count rate with an amplitude up to tenths of a percent and short bursts vastly exceeding the usual count rate are found. At the same time, several experiments did not detect any differences from the “normal” course of beta decays greater than 0.01%. The article shows that the inconsistency of the experimental results is due to different measurement technique. The assumption is made of the possible participation in the beta decay processes of cosmic slow neutrinos, which makes it possible to explain in a comprehensive manner not only periodic and sporadic changes in the beta decay rate, but also a number of other incomprehensible phenomena associated with beta radioactivity. On the basis of the experiments carried out, an estimate is made of the flux density of slow cosmic neutrinos.

Exploring human rhythmic gait movement in the role of cerebral cortex signal

The rhythmic movement is a spontaneous behavior due to the central pattern generator （CPG）. At present, the CPG model only shows the spontaneous behavior, but does not refer to the instruction regulation role of the cerebral cortex. In this paper, a modified model based on the Matsuoka neural oscillator theory is presented to better show the regulation role of the cerebral cortex signal to the CPG neuronal network. The complex interaction between the input signal and other parameters in the CPG network is established, making all parameters of the CPG vary with the input signal. In this way, the effect of the input signal to the CPG network is enhanced so that the CPG network can express the self-regulation movement state instead of being limited to the spontaneous behavior, and thus the regulation role of the cerebral cortex signal can be reflected. Numerical simulation shows that the modified model can generate various movement forms with different modes, frequencies, and interchanges between them. It is revealed in theories that the cerebral cortex signal can regulate the mode and frequency of the gait in the ~ourse of the gait movement.

Some Tonal and Rhythmical Sequences in the Vocal Language of Dogs as Significant Earthquake Precursors

A monitoring of multiple physical parameters in a moderate seismic area in Western Piedmont (NW Italy) and the simultaneous observation of the behaviour of numerous species of domestic and wild animals gave in a period of over twenty years the possibility to distinguish the unusual animal behaviours due to local earthquake nucleation from other causes. In particular, the observation of the body and vocal language of dogs (Canis familiaris) in the same area has permitted not only to specify the different meanings of vocal language in connection to their body language, but also to classify the minimum elements into a vocal language that is linked together by tonal and rhythmical sequences of sounds that form a semantic lexicon. The usage of the same tonal and rhythmical vocal sequences in similar or identical situations, which are experienced by different groups of dogs, induces us to verify whether it could be possible to link particular vocal sequences to precise physical anomalies before earthquakes. The individuation of physical anomalies due to an earthquake nucleation or due to a hydro-geological destabilization, is possible thanks to a continuous long-term monitoring of some parameters. Moreover, the complexity of the vocal language of dogs increases if the dogs live in an area with a law population density. Then the correlation between some vocal sequences and some seismic precursors is better if dogs live free in yard or on farms, if they are in good health, and if they can establish a strong social relation of group. When dogs live closed in yards of houses that are far apart, they communicate with each other with an amazing vocal language, full of questions and answers, imitations of sequences, and information about situations that may be harmful to them.

Vibration Analysis and Fatigue Assessment of Floors.Part I:Human Rhythmic Activities

Structural problems associated with excessive vibration of building floor systems when subjected to human rhythmic activities have been frequent.In this context,this research work aims to develop an analysis methodology to evaluate the human comfort and assess the fatigue performance of steel-concrete composite floors when subjected to human rhythmic activities(aerobics).The investigated structural model corresponds to a steel-concrete floor with dimensions of 10 m×10 m and a total area of 100 m^(2).The numerical model developed for the dynamic analysis of the floor adopted the usual mesh refinement techniques present in finite element method(FEM)simulations implemented in the ANSYS program.The investigated floor dynamic response was calculated through the consideration of people practicing rhythmic activities on the structure,in order to verify the occurrence of excessive vibration and to assess the human comfort.The fatigue assessment is based on a linear cumulative damage rule through the use of the Rainflow-counting algorithm and S-N curves from traditional design codes.The results indicated that,in several analysed situations,the investigated floor presents excessive vibration and user’s discomfort.On the other hand,the structure service life values were higher than those proposed by the design codes,ensuring that the members,connections and joints will not fail by fatigue cracking.

The Rhythmic Beauty of The Solitary Reaper

Wordsworth who focuses on common people’s common life as his major theme gives readers a sense of universality of human destiny via the description of sounds in The Solitary Reaper through poetic style,rhythmic modes and rhetorical devices which shows musical beauty of the poem.

Central pattern generation underlying Limulus rhythmic behavior patterns

Many behavioral activities of the horseshoe crab Limulus are rhythmic, and most of these are produced in large partby central pattern generators within the CNS. The chain of opisthosomal ('abdominal') ganglia controls gill movements of ventilationand gill cleaning, and the prosomal ring of fused ganglia (brain and segmental 'thoracic' ganglia) controls generation offeeding and locomotor movements of the legs. Both the opisthosomal CNS and the prosomal CNS can generate behaviorally appropriatepatterns of motor output in isolation, without movements or sensory input. Preparations of the isolated opisthosomalCNS generate rhythmic output patterns of motor activity characterized as fictive ventilatory and gill cleaning rhythms. Moreover,CNS preparations also express longer-term patterns, such as intermittent ventilation or sequential bouts of ventilation and gillcleaning. Such longer-term patterns are commonly observed in intact animals. The isolated prosomal CNS does not spontaneouslygenerate the activity patterns characteristic of walking, swimming, and feeding. However, perfusion of octopamine in the isolatedprosomal CNS activates central pattern generators underlying rhythmic chewing movements, and injection of octopamine into intactLimulus promotes the chewing pattern of feeding, whether or not food is presented. Our understanding of the ability of neuromodulatorssuch as octopamine to elicit or alter central motor programs may help to clarify the central neural circuits of patterngeneration that produce and coordinate these rhythmic

“约定”与“再约定”——对“rhythmic gymnastics”汉译的再思考

中国媒体通常将体育赛事项目中的“体操”与“artistic gymnastics”等同起来,而将“艺术体操”与“rhythmic gymnastics”等同起来。然而,从语言逻辑上来说,这种翻译存在问题。为了避免引起误会,无论从语言自身逻辑自洽角度而言,还是为了实现同国际接轨,都应当将“rhythmic gymnastics”“再约定”译作“韵律体操”,而将“artistic gymnastics”“再约定”译作“艺术体操”,实现语言回归。翻译语言的“约定俗成”不是一劳永逸的。为了实现语言逻辑自洽,翻译语言“约定”之后局部需要“再约定”。翻译核心概念时,应重视语言逻辑问题,既要重视语内连贯,也要重视语际连贯。

A Perspective on Rhythmic Gymnastics Performance Analysis Powered by Intelligent Fabric

Performance analysis is an important tool for gymnasts and coaches to assess the techniques,strengths,and weaknesses of rhythmic gymnasts during training.To have an accurate insight about the motion and postures can help the optimization of their performance and offer personalized suggestions.However,there are three primary limitations of traditional perfor-mance analysis systems applied in rhythmic gymnastics:(1)Inability to quantify anthropometric data in an imperceptible way,(2)labor-intensive nature of data labeling and analysis,and(3)lack of monitoring of all-round and multi-dimensional perspectives of the target.Thus,an advanced performance analysis system for rhythmic gymnastics is proposed in this paper,powered by intelligent fabric.The system uses intelligent fabric to detect the physiological and anthropometric data of the gymnasts.After a variety of data are collected,the analysis component is implemented by artificial intelligence techniques resulting in behavior recognition,decision-making,and other functions assisting performance improvement.A feasible solution to implementing the analysis component is the use of the hyperdimensional computing technique.In addition,four typical applications are presented to improve training performance.Powered by intelligent fabric,the proposed advanced performance analysis system exhibits the potential to promote innovative technologies for improving training and competi-tive performance,prolonging athletic careers,as well as reducing sports injuries.

自我节律性引导对脑卒中偏瘫患者步行功能的即刻影响

目的:观察自我节律性引导对脑卒中偏瘫患者步行功能的即刻影响。方法:选取2023年2—8月就诊于安徽医科大学第一附属医院康复医学科,并符合本次研究入组标准的20例脑卒中肢体偏瘫患者,在节律引导前及自我节律性引导步行过程中,均使用意大利BTS公司的P-WALK平板压力测试系统进行数据采集。采集的参数指标包括:步速、步幅、步态周期、患侧预承重期、患侧单支撑期、患侧预摆动期、患侧摆动期。结果:与节律引导前步行比较,20例测试患者自我节律性引导步行患者步速、患侧步幅、健侧步幅均明显提高(P<0.05),患侧步态周期及健侧步态周期均明显缩短(P<0.05)。患侧预承重期和预摆动期占患侧步态周期比例均显著减小,患侧单支撑期和摆动期占患侧步态周期的比例均明显提高(P<0.05)。结论:脑卒中偏瘫患者行自我节律性引导步行时,可以一定程度提高步速和步幅,同时偏瘫肢体的预承重期、预摆动期、单支撑期和摆动期占患侧步态周期比例均不同程度趋于正常。因此,脑卒中偏瘫患者在下肢步行康复训练过程中行自我节律性引导,可以改善步行功能及纠正偏瘫患者异常步态。

基于脑电技术的MOOC平台用户体验优化策略研究

目的通过脑电技术与主观问卷相结合的方式,测量MOOC平台用户体验水平,探索影响MOOC平台用户体验的主要因素,提出设计优化建议。方法通过脑电技术采集各被试者在使用MOOC平台时的脑电信号特征,结合用户体验量表获取用户的主观评价。采用频域分析的方法提取节律波能量值并进行定量化分析,洞察节律波能量与主观评价的内在联系,从而实现MOOC平台用户体验水平的定量化分析。结论中国大学MOOC平台用户体验优于学堂在线平台,MOOC平台可用性、可寻性是影响用户注意力、脑力负荷、唤醒度的重要影响因素,MOOC平台愉悦性是影响用户情绪的主要因素。

以文为诗,以诗为词,以古为律:清代诗话的破体观念论析

清代诗话是清代文体史料及文体批评的渊薮,其中破体观念在清诗话文体理论中又最为突出和独具特色。目前学界整理的煌煌16册174种清诗话中论及以文为诗、以诗为词、以古为律及其对立范畴以诗为文、以词为诗、以律为古等破体批评的诗话就多达63部,贯穿整个清代诗话史和诗学史。清代诗学史上具有重要学术地位的学者诸如王夫之、叶燮、王士祯、沈德潜、赵翼、翁方纲、潘德舆等,在对相关破体范畴进行文体批评时,往往褒贬倾向不一,或肯定,或否定,或辩证看待,引发了旷日持久的学术争鸣,并在演进递嬗中形成了系统的破体观念体系,堪称中国古代破体理论的集大成和总结者。这对于纵向观照和比较研究宋元明诗话破体观念具有重要的文体批评史学术价值和理论意义。

中外优秀男子400 m栏运动员分段成绩及全程节奏比较

为揭示优秀男子400 m栏运动员分段成绩及全程节奏特征,探究中外优秀男子400 m栏运动员成绩和技术的发展特征及具体差距,搜集了男子400 m栏世界排名前3的运动员沃霍姆、本杰明、桑托斯及中国运动员谢智宇近3年的主要比赛决赛视频,采用Dartfish软件对视频进行逐帧解析,并对比赛成绩、步幅、步频、速度及节奏变化进行了分析与比较.结果显示:国外优秀运动员在H1—H2阶段速度达到全程最大,为(8.77±0.72) m/s,且前3栏速度变化呈现“N”形态,谢智宇在绝对速度上低于国外优秀运动员,在H1—H2阶段差距最大,差值接近1.00 m/s;国外优秀运动员栏间步数基本固定,大部分运动员在比赛中会有1次步数调整,第1次调整在H7居多,谢智宇在栏间的步数变化次数多于国外优秀运动员.

从日本唐传乐谱看节奏节拍符号的演变

日本唐传乐谱虽经历“平安朝乐制改革”的整合、改编和再创造,但其节奏、节拍符号仍具有承前启后的历时性特点。其中:节奏符号承自唐代谱式,后趋于简化,最终与演奏法融为一体;节拍符号上承《敦煌乐谱》并被赋予鼓谱的含义,在当今活态音乐中演变为“板眼”。日本唐乐古谱上承唐代谱式,下衔西安鼓乐、福建南音等活态乐谱,其蕴含的内在逻辑与中国传统乐谱体系脉脉相通,对其符号的解读破译,能补充中国乐谱体系从燕乐半字谱到工尺谱演变进程中所缺失的环节。