街舞元素Happy feet基础动作理论及其文化价值

文章运用文献法、观摩法、视频分析法和实践法,首先从基本形态、节奏与呼吸、动作重难点这三个方面分析拆解街舞元素Happyfeet的基本动作理论,再根据经典作品案例分析该元素融入成人及少儿齐舞的方式特点,为该元素的运用提供理论依据。最后,从审美价值、健身价值、娱乐价值角度深度分析该元素存在的文化价值,进而探索该元素的运用规律。

基于二氧化铈/羟基氧化铁纳米酶的比色分析法快速检测泡椒凤爪中过氧化氢

采用水热法合成二氧化铈(CeO_(2))修饰的羟基氧化铁(FeOOH),得到纳米材料CeO_(2)/FeOOH。CeO_(2)/FeOOH具有类过氧化物酶活性,可以催化过氧化氢(H_(2)O_(2))分解产生羟自由基(·OH)和超氧阴离子自由基(O2-·),将3,3’,5,5’-四甲基联苯胺(3,3’,5,5’-tetramethylbenzidine,TMB)氧化为蓝色的氧化TMB(oxidized TMB,ox-TMB)。基于此,构建基于CeO_(2)/FeOOH纳米酶的H_(2)O_(2)比色传感器。结果表明:该比色传感器对H_(2)O_(2)显示出高灵敏度响应,检测限为3.92μmol/L,检测范围为10~1000μmol/L。此外,该传感器可用于泡椒凤爪中H_(2)O_(2)的快速检测,其中,H_(2)O_(2)加标回收率为90.59%~93.42%,相对标准偏差≤4.25%,具有灵敏、准确、快速和简便等优势。

Why does Tom have feet?

Young Tom is four years old.He is bright(聪明的)and lovely(可爱的).His father and mother lovehim very much.His father works ina factory.He always has a lot ofwork to do.So his mother oftenfeeds(喂)him food and carrieshim in her arms.Tom is too pam-pered(娇惯的).

Modeling and analysis of passive dynamic bipedal walking with segmented feet and compliant joints

Passive dynamic walking has been developed as a possible explanation for the efficiency of the human gait. This paper presents a passive dynamic walking model with segmented feet, which makes the bipedal walking gait more close to natural human-like gait. The proposed model extends the simplest walking model with the addition of fiat feet and torsional spring based compliance on ankle joints and toe joints, to achieve stable walking on a slope driven by gravity. The push-off phase includes foot rotations around the toe joint and around the toe tip, which shows a great resemblance to human normal walking. This paper investigates the effects of the segmented foot structure on bipedal walking in simulations. The model achieves satisfactory walking results on even or uneven slopes.

Solving position-posture deviation problem of multi-legged walking robots with semi-round rigid feet by closed-loop control

The semi-round rigid feet would cause position-posture deviation problem because the actual foothold position is hardly known due to the rolling effect of the semi-round rigid feet during the robot walking. The position-posture deviation problem may harm to the stability and the harmony of the robot, or even makes the robot tip over and fail to walk forward. Focused on the position-posture deviation problem of multi-legged walking robots with semi-round rigid feet, a new method of position-posture closed-loop control is proposed to solve the position-posture deviation problem caused by semi-round rigid feet, based on the inverse velocity kinematics of the multi-legged walking robots. The position-posture closed-loop control is divided into two parts: the position closed-loop control and the posture closed-loop control. Thus, the position-posture control for the robot which is a tight coupling and nonlinear system is decoupled. Co-simulations of position-posture open-loop control and position-posture closed-loop control by MATLAB and ADAMS are implemented, respectively. The co-simulation results verify that the position-posture closed-loop control performs well in solving the position-posture deviation problem caused by semi-round rigid feet.

Feet injuries in rock climbers

While injuries of the upper extremity are widely discussed in rock climbers, reports about the lower extremity are rare. Nevertheless almost 50 percent of acute injuries involve the leg and feet. Acute injuries are either caused by ground falls or rock hit trauma during a fall. Most frequently strains, contusions and fractures of the calcaneus and talus. More rare injuries, as e.g., osteochondral lesions of the talus demand a highly specialized care and case presentations with combined iliac crest graft and matrix associated autologous chondrocyte transplantation are given in this review. The chronic use of tight climbing shoes leads to overstrain injuries also. As the tight fit of the shoes changes the biomechanics of the foot an increased stress load is applied to the fore-foot. Thus chronic conditions as subungual hematoma, callosity and pain resolve. Also a high incidence of hallux valgus and hallux rigidus is described.

Topical 15% Zinc Sulfate Solution Is an Effective Therapy for Feet Odor

Background: Feet odor is a common sociomedical problem that affects the feet of human beings of different etiological factors. Multiple modalities of therapy have been used in the treatment of feet odor. Objective: To evaluate the efficacy and safety of topical 15% zinc sulfate solution in the treatment of feet odor. Patients and Methods: This single blind, placebo, controlled therapeutic study was conducted at the Department of Dermatology-Baghdad Teaching Hospital, from March 2010 to July 2011. A total of 108 (88 males and 20 females) patients with feet odor were enrolled and were divided into 2 groups: Group A: treated with 15% zinc sulfate solution. Group B: treated with distilled water as placebo control group. Full history and examination were carried out including all relevant points. Four scoring had been used to assess the severity of odor in patients with bared feet Score 0: no odor, Score 1: mild odor, Score 2: moderate odor and Score 3: severe odor. Zinc sulfate solution 15% was applied to sole and toe webs once daily for two weeks, three times per week for next two weeks and followed by single application weekly as maintenance after clearance of odor for two months. Patients were seen every two weeks to be examined and to score the odor again and to record side effects. Results: Group A: Fifty patients completed the study, their ages ranged from 8 - 68 (33 + 14.5) years, while the duration of the disease ranged from 1 - 180 (7.22 + 38.24) months. The complete clearance of feet odor after two weeks of therapy was 35 (70%) patients which was similar to two months maintenance therapy 35 (70%) and was highly statistically significant (p value = 0.0000001). Group B: Fifty patients received the placebo solution, their ages ranged from 16 - 75 (32.6 + 13.4) years, while the duration of the disease ranged from 1 - 180 (43.7 + 47.65) months. The complete clearance of feet odor was in 1 (2%) patient after two weeks therapy and after two months maintenance therapy. No side effects were recorded. Conclusions: Topical 15% zinc sulfate solution had an effective therapeutic and prophylactic action against feet odor.

Development of Feet Edema on Contact with a Cemented Floor in Specific Individuals with Genetic Predisposition

Edema is a sign/symptom which has origin diverse causes and mechanisms of installations. I do believe that it can be classified into appendicular and axial edemas with reference to the body division rather than the present classification of peripheral edema and other edemas. Edema being a sign/symptom as an entity does cause other signs and symptoms in the body. From observations, I do believe that a cemented floor causes the development of feet edema in specific individuals with genetic predisposition. This can be confirmed by the fact that when these persons place their feet on somewhere else rather than the floor, they do not develop an edema.

FTIR Characterization of Gelatin from Chicken Feet

The objective of this study was characterizing the gelatin from the chicken feet by FTIR （Fourier transform infrared） spectroscopy. Two gelatin samples were prepared for the experiment which were extracted of 200 g of chicken feet by a thermal bath of 4% acetyl acid solution at 60 ℃. A commercial gelatin was used to compare the results. FTIR spectra of gelatin samples were recorded using a Nicolet iS5 FTIR spectrometer equipped with an ATR/iD3 with argon horizontal cell in which the spectra were varied in the range of 400-4,000 cm1 at 16 ~C. The results showed that FTIR spectra of the chicken feet gelatin had the most with the vibration peak at wave numbers of 1,652.01 cm~ to the amide I, of 1,539.87 cm1 to the amide II, of 1,241.29 cm~ to the amide III, of 2,923.72 cm-~ to the amide B and of 3,399.56 cm~ to the amide A. The collagen composition of the chicken feet gelatins was twotimes larger than the commercial gelatin and the vibration bands to beef gelatin have been different from chicken feet gelatins. This demonstrates that chicken feet gelatins are very good nutritional quality when compared to the commercial gelatin.

黄芪桂枝五物汤治疗乳腺癌化疗后手足麻木的效果

目的:探讨乳腺癌化疗后手足麻木采用黄芪桂枝五物汤治疗的效果。方法:选取2018年1月—2022年12月南通市第三人民医院收治的乳腺癌化疗后手足麻木患者110例作为研究对象,按照双色球法随机分为两组,各55例。对照组采用常规西药治疗,观察组采用黄芪桂枝五物汤治疗。比较两组手足麻木消退时间、治疗效果、关节活动度。结果:观察组手足麻木消退时间短于对照组,差异有统计学意义(P<0.001)。观察组治疗总有效率高于对照组,差异有统计学意义(P=0.019)。治疗前,两组关节前屈、外展、后伸、内收角度比较,差异无统计学意义(P>0.05);治疗后,两组关节前屈、外展、后伸、内收角度大于治疗前,且观察组大于对照组,差异有统计学意义(P<0.05)。结论:黄芪桂枝五物汤治疗乳腺癌化疗后手足麻木的效果显著,可有效改善患者肢体功能,缓解手足麻木症状。

Broiler Feet Gelatine

The two waves period of the COVID-19 pandemic saw the use of hydro- alcoholic gel and the consumption of capsules containing improved traditional remedies. At one point, there was a stock-out and a price increase forthese products. Furthermore, in the food industry, the catering industry adopts gelatin in its current practice. Pig gelatin dominates the international market. And for some religious practices, pork is forbidden and yet these people consume them without taking notice. The production of gelatin from broiler feet seems economically viable because broiler feet are considered slaughterhouse waste that is sold at very low prices. The poultry industry has seen an increase in broiler farming over the last twenty years. However, the latter has all the characteristics required for the production of gelatin. It will therefore comply with the standards of use described in the international codex oenological for gelatins. Physical and chemical analyses such as, ash content, moisture content, and pH measurements were done for the extracted gelatins. Sensible elements are checked with ED XRF spectroscopy. All the results were good and showed without any doubt that broiler gelatin is edible.

A Prospective Single-Arm Investigation Assessing Performance of a Multifunctional Foot Cream in Subjects with Tinea Pedis Interdigitalis and Heel Cracks, Calluses and/or Dry Feet

This prospective, open-label, single-arm investigation evaluated the performance of a multifunctional foot cream used twice daily for 8 weeks in the combined treatment of mild/moderate tinea pedis interdigitalis (TPI) and heel cracks, calluses and/or dry feet in 46 adult subjects. All subjects showed reductions in the severity of symptoms of both TPI (53.7% reduction) and heel cracks, calluses and/or dry feet (51.6% reduction), beginning already after 2 weeks of treatment, with reduction continuation and improvement after 4 and 8 weeks of treatment. Negative mycological cultures were obtained post-treatment in 85.7% of subjects, while 35.7% of subjects also obtained mycological cure (negative mycological culture + negative KOH test). Post-treatment questionnaires showed improved quality of life, good treatment tolerability, easy use, and that 69% of subjects would recommend the product. The results reveal that the foot cream is safe and effective in the combined treatment of TPI and heel cracks, calluses and/or dry feet.

敦煌莫高窟隋至初唐洞窟西壁所绘图像的功能

敦煌莫高窟第57窟是唐前期第一期的代表洞窟。外层龛正面左右下部绘有树下两脚合并坐式菩萨像和树下坐于藤座上呈半跏思惟姿势的菩萨像。这种菩萨坐像的组合以及与其类似的组合,在隋代第二期洞窟中就已出现,它们与弥勒像密切相关。但在第57窟中,与隋代第二期洞窟有所不同的是人们憧憬的往生净土画在窟顶。阿弥陀如来作为过去佛,由阿弥陀、释迦、弥勒构成的新三世佛在唐前期第一期完成了转变。重要的是南北壁所表现的树下说法图不仅仅表现了三世佛,还表现了当时人们所憧憬的往生世界的情景。另外,唐前期第一期出现了将弥勒以如来表现且坐于宝池中。但是,初唐第一期末期的第322窟仅北壁阿弥陀如来坐在宝池中,南壁的弥勒如来未见宝池,这是因为弥勒净土本来就没有宝池。这种阿弥陀如来和弥勒如来都拥有配备宝池的净土的模糊印象,也显示了净土之间的不同。第57窟与第322窟一样,北壁如来坐像坐于宝池中伸出的莲花座上、南壁如来坐像周围未见表现其坐于宝池中的莲花和荷叶,那么第57窟南壁主尊虽然不是如来倚坐像,但下意识地作为弥勒如来而绘制的可能性很高。

鸡爪跗跖骨的剥离特性及其影响因素

目前鸡爪在脱骨加工过程中存在骨肉剥离特性不明确,几何形貌不规整,机械化脱骨难的问题。本文首先建立具有统计学意义的鸡爪及其跗跖骨的数字模型以及参考坐标系。在此坐标系下,以剥离强度为衡量指标,通过各向剥离法对鸡爪的各向剥离强度及相应的剥离残留率进行测定,分析影响剥离强度的因素。结果表明,轴向剥离强度曲线整体趋势呈U型,最大剥离强度为3.23 kN/m。周向剥离强度曲线大多呈锯齿状,最大剥离强度出现的位置在跗跖骨顶部,为5.12 kN/m。在剥离过程中跗跖骨的骨外组织呈层性的特征,肉质内部存在脱层现象。在跗跖骨不同界面处的生物结构及组成对界面结合强度的影响不同,跖骨槽处界面结合强度最低,滑车凹口处骨外组织的呈层性特征并未影响界面的结合强度,且其正交方向上表现为各向同性,韧带脊和杯状凹处的界面结合存在着比较明显的各向异性。轴向剥离强度在峰值大小及数量上远小于周向剥离强度,剥离残留率结果也表明,轴向剥离残留率远小于周向的剥离残留率,这表明采用轴向剥离的方式在实际脱骨中是最优的选择。

畸形文化景观的深层透视——论杨杨长篇文化散文《小脚舞蹈》

杨杨的长篇文化散文《小脚舞蹈》,突破了以往同类题材书写,采取主客对话与知识考古的方式,对一种畸形文化景观予以新的发掘和审视。对于女性悲剧命运的根源,也进行了深入阐释。诗性与智性的有力融汇,使得此书新散文的特征十分明显。

低蛋白日粮添加晶体氨基酸对21~60日龄青脚麻母鸡生长性能、血清生化指标和屠宰性能的影响

文章旨在研究低蛋白质日粮添加6种晶体氨基酸(赖氨酸、苏氨酸、色氨酸、精氨酸、缬氨酸、异亮氨酸)对青脚麻母鸡生长性能、血清生化指标和屠宰性能的影响。试验将720只21日龄的青脚麻母鸡分成对照组和试验组,每组6个重复,每个重复60只,21~40 d对照组和试验组粗蛋白质水平分别为19.5%、16.5%,D-lys为1%,按照理想氨基酸模型比例补充6种氨基酸(赖氨酸、苏氨酸、色氨酸、精氨酸、缬氨酸、异亮氨酸)达到一致水平。41~60 d对照组和试验组粗蛋白质水平分别为18%、15%,D-lys为0.85%,按照理想氨基酸模型比例补充6种氨基酸(赖氨酸、苏氨酸、色氨酸、精氨酸、缬氨酸、异亮氨酸)达到一致水平。结果表明,与对照组相比,试验组青脚麻母鸡的生长性能、血清生化指标和屠宰性能均无显著变化(P>0.05)。综上所述,在理想氨基酸模型下日粮中粗蛋白水平降低3%,21~60日龄青脚麻母鸡的生长性能、血清生化指标和屠宰性能均不受影响。

远端蒂腓肠神经营养血管皮瓣修复足跟部软组织缺损的疗效

目的探讨远端蒂腓肠神经营养血管皮瓣修复足跟部软组织缺损的临床疗效。方法采用远端蒂腓肠神经营养血管皮瓣修复25例足跟部软组织缺损患者,均经明道转移皮瓣至受区。缺损面积4.2 cm×3.6 cm~9.5 cm×7.0 cm;皮瓣设计面积5.0 cm×4.2 cm~11.5 cm×8.4 cm。结果患者均获得随访,时间11~38个月。皮瓣均成活,供区一期愈合。术后3个月皮瓣外观色泽良好,质地柔软,对正常穿鞋无影响,未出现磨损溃疡,患者满意度较高。结论远端蒂腓肠神经营养血管皮瓣修复足跟部软组织缺损,具有解剖相对恒定、手术操作简单、不牺牲主要动脉、皮瓣易成活的优势。

基于纯培养法结合高通量测序技术解析胀袋辐照凤爪中的微生物多样性

为研究真空包装胀袋辐照凤爪中的微生物多样性,该研究采用纯培养法与高通量测序技术对其微生物多样性进行解析。纯培养法结果表明,13株菌经鉴定分为4株植物乳杆菌(Lactiplantibacillus plantarum)、3株短乳杆菌(Lactobacillus brevis)、1株寡养单胞菌(Stenotrophomonas maltophilia)、3株欺诈明串珠菌(Leuconostoc fallax)以及2株热带假丝酵母(Candida tropicalis)。高通量测序的结果表明,乳杆菌属(Lactobacillus)在胀袋辐照凤爪中的相对丰度最高(平均占比97.30%),是胀袋凤爪中的优势菌。此外,产气胀袋验证试验的结果表明L.brevis及L.fallax可引起产品胀袋。该研究结果可为掌握辐照凤爪胀袋产品中微生物污染及群落组成提供一定参考,并为后续产品微生物污染控制及产品品质提升提供一定理论依据。

圆弧足被动行走机器人动力学参数影响研究

被动行走机器人运动特性主要取决于动力学参数的选择。为研究参数变化对机器人步态的影响,以圆弧足被动行走机器人为研究对象,利用拉格朗日方法建立动力学方程并进行了数值仿真。借助分岔理论研究了圆弧足半径、质心位置、转动惯量和斜坡倾角对机器人稳定步态的影响。采用正交扰动向量法求解被动行走机器人这种非光滑系统的李雅普诺夫指数,对分岔动力学进行了验证。结果表明:随着质心位置、转动惯量和斜坡倾角增大,机器人步态出现倍周期分岔现象,当圆弧足半径在特定区间内增大时机器人仍保持周期一步态,但足半径过度增大会导致步态失稳;另外,双参数研究中对圆弧足半径和质心位置联合作用下机器人稳定参数区间变化进行了分析,并且发现机器人步态呈现出逆倍周期分岔现象。该研究结果为未来双足步行机器人的优化设计和主动控制提供了重要参考。

腐败辐照凤爪中的真菌多样性及其与挥发性成分的相关性研究

鉴于预包装凤爪辐照灭菌后仍会发生胀袋等腐败现象,为探讨腐败辐照凤爪真菌多样性及挥发性成分的变化,本研究利用高通量测序技术解析了正常凤爪和腐败凤爪中的真菌多样性,并通过顶空固相微萃取结合气相色谱质谱法分析了挥发性成分的变化。此外,通过Spearman相关性分析揭示了优势核心微生物与挥发性成分之间的相关性(|r|>0.8,P<0.05)。高通量测序结果表明,担子菌门(Basidiomycota)和子囊菌门(Ascomycota)是腐败凤爪中的优势门,嗜热子囊菌属(Thermoascus)和曲霉属(Aspergillus)是腐败凤爪中的优势属。采用顶空固相微萃取结合气象色谱质谱法从正常凤爪和腐败凤爪中共鉴定出72种挥发性成分。利用正交偏最小二乘判别分析分别筛选出11种优势核心真菌属和34种挥发性成分的标志物。基于Spearman分析的相关性网络图显示,10个优势核心真菌属对腐败前后凤爪的挥发性成分含量有显著影响(VIP>1,P<0.05),包括未分类_o_酵母菌属(unclassified_o_Saccharomycetales)、枝孢菌属(Cladosporium)、镰刀菌属(Fusarium)、Vanrija、Thermoascus、Apiotrichum、未分类_k_真菌(unclassified_k_Fungi)、Aspergillus、假丝酵母属(Candida)和复膜孢酵母属(Saccharomycopsis)。本研究可为优化凤爪生产工艺和辐照灭菌工艺,解决其腐败问题提供理论参考。