Do Dental Self-Care Habits Correlate with Oral Health？

Research evidence substantiating benefits of dental self-care habits is surprisingly limited. This study evaluated associations between dental self-care behaviors and oral health, specifically toothbrushing, flossing, rinsing, chewing xylitol gum, and diet. Soldiers recently deployed to Iraq and Afghanistan had dental examinations and answered questionnaires on dental self-care habits. The DoD Oral Health and Readiness Classification System was used to categorize oral health （see manuscript for definitions）. Correlations were assessed between self-care habits and dental classification. Of 266 soldiers, 43 （16%） were Class 1 （excellent）, 191 （72%） Class 2 （acceptable）, 18 （7%） Class 3 （poor）, and 14 （5%） Class 4 （unknown）. Only 63% of soldiers brushed twice or more per day and only half flossed once or more per day. Dental classification improved with toothbrushing （P = 0.05） and adherence to a Mediterranean diet （P = 0.04）. Flossing trended toward correlation （P = 0.11）. Dental classification did not correlate with mouth rinse or xylitol chewing gum. These research findings help fill an evidence gap that toothbrushing and flossing in addition to a healthful eating pattem are associated with improved oral health.

Effect of Interaction Intensity on Alignment and EFL Learners’ Oral Production in the ReadingSpeaking Integrated Continuation Task

This study aims to uncover the relationship between interaction and alignment in a readingspeaking integrated continuation task, especially focusing on whether an increase in interaction intensity can lead to stronger alignment and further generate positive effects on L2 learning. To this end, 31 participants were asked to perform reading-speaking integrated continuation tasks under three different conditions featuring low, medium and high interaction intensity respectively. The results showed that 1) alignment existed in the reading-speaking integrated continuation task;2)increasing interaction intensity generated stronger alignment at both linguistic and situational levels;3) growing interaction intensity contributed to more coherent and accurate L2 oral production. These findings not only proved the workings of mind-body-world alignment, but also testified that increasing interaction intensity could bring about a stronger alignment effect(Wang,2010), which then contributed to better L2 oral performance. These findings confirm again the role of interaction in L2 learning and suggest that alignment could possibly be a mediating factor that links interaction and L2 development. Pedagogical implications for teaching and learning L2 speaking are discussed.

Flavor release from traditional dry-cured pork during oral processing

The rate of flavor release in the mouth from traditional dry-cured pork was evaluated in this study.It was hypothesized that a slow steady release of flavor would occur on chewing and hydration.To test this,high salt dry-cured pork was chewed and held in oral cavity without swallowing for 4 different chewing stages(B,NC_(30),C_(30),EC).Saliva and food bolus from 16 healthy subjects were collected during oral processing,and analyzed for saliva flow rate,total saliva protein content,saliva pH,conductivity,saliva and sodium,and taste components.Results show that oral processing behavior and salivary release have important effects on flavor release of dry-cured pork.Sodium dodecyl sulfate-polyacrylamide gel electrophoresis(SDS-PAGE)analysis showed that oral processing has a certain effect on the protein composition and concentration in saliva.This study suggests that the interaction between food and saliva that accompanies chewing can lead to significant changes in sensory perception during oral processing.

Current Situation and Trend of the Technology Development of China’s Oral Care Products

This paper details the latest situation and features of the technology development in terms of China’s oral care products industry and proposes the following development direction in this sector. Meanwhile, the paper analyzes the popular products in the international market of oral care products and also predicts the trend of the product future in China’s market.

An Introduction to the Standardization of China Oral Care Products (Toothpaste) Industry

Oral care products industry is an important part of the daily chemical products industry, which includes toothpaste, toothbrushes and gargle, etc. In 2010, the National Oral Care Products Standardization Technical Committee was founded along with three subcommittees. The period of ＂12th Five-Year Plan＂ is not only an important period for the development of oral cleansing products industry, but also the critical time to promote the strategy of fully promotion on the industry standardization. The oral cleansing products standard includes three products： oral care products, oral care appliances and the raw material of oral care products. Toothpaste, as an important product of the oral care products, the earliest toothpaste standard in China can be traced back to 1956, and it became the first national toothpaste draft standard until 1987： GB 8372-1987 ＂Toothpaste＂. The standard was officially approved to be carried out on March 1, 1988. The technical index of GB 8372-2008 includes： net content, quality of toothpaste, pH vaule, stability, superhard particle, soluble and free fluoride, total fluoride, arsenic, mercury, etc.

A Discussion on the Development Status of Oral Care Products Industry in China

The general situation of production and sales of China’s oral cleaning care products industry in 2021 was briefly introduced.The market status and trend characteristics of the development of China’s oral cleaning care products industry was mainly discussed.The features and suggestions of China’s oral cleaning care products industry was summarized.

不同模态及趣味性续说任务对口语纠错效果及协同量的影响

本文着眼考察模态变量与趣味性变量对续说产出中协同量及错误率的影响,研究采用定性和定量相结合的方法。研究结果显示:在四组不同模态输入方式中,协同量最多,错误率最少的是视听读续说组。无论是低水平组还是高水平组,趣味性读后续说组较之无趣续说组协同效应更强,且语言流利度要高,语言错误率要更低。研究结果为纠错研究与大学英语口语教学提供了一套操作性强的续说标准和流程,为基于续论的英语口语教学提供了借鉴和参考。续说纠错教学模式,在教学模式上是一种创新,可以极大地提高学生学习的主动性和独立思考的能力,且可操作性强。

基于具身认知理论的婴儿牙胶产品设计

为拓展国内婴儿产品的设计思路和方法,提升婴儿产品的交互体验,文章从具身认知理论出发,以婴儿牙胶产品为例,分析婴儿具身认知的生理、心理、行为以及婴儿对牙胶产品的需求,从而构建出符合婴儿认知的牙胶产品设计策略。并以7—9个月的婴儿为研究对象,分析其认知特性并进行牙胶产品设计实践。从而论证具身认知理论运用到婴儿牙胶产品设计的可行性,为婴儿产品设计提供新视角。

晚期糖基化终产物在口腔鳞状细胞癌发展及治疗的研究进展

了解口腔鳞状细胞癌(OSCC)发生、发展的分子机制仍然是认识OSCC恶性生物学特点及探索针对性治疗方法的研究热点。晚期糖基化终末产物(AGE)及其受体RAGE与其他受体在体内相互作用,从而激活多个信号通路,诱导白细胞介素、生长因子和细胞因子的合成。近期的研究表明,AGE/RAGE相关信号传导通路的激活影响OSCC的增殖、侵袭、血管生成、局部复发,与晚期OSCC症患者的预后不良有关。本文对AGE/RAGE与OSCC恶性演进进行综述,以期为OSCC治疗提供潜在靶点。

基于ICP-OES评估口服抗糖产品中金属元素健康风险

以口服抗糖产品为研究对象,建立电感耦合等离子体发射光谱法(ICP-OES),同时测定样品溶液中铬、镁和锌含量.结果表明,在一定浓度范围内,各元素线性相关系数均为0.9999,平均加标回收率为88.21%~97.95%;检出限为0.0006~0.0033μg/mL,精密度为0.25%~0.55%;表明该方法简便、准确,精密度高.同时,依据国家相关标准的规定对测试结果进行分析,得到3种金属元素的健康风险评估,其含量均在安全范围之内,并给出了饮用建议,即需注意铬的总摄入量.

“产出导向法”理念下中国文化融入英语口语教学的实践研究

高职学生只有深入了解中国文化,才能建立文化自信和培养民族使命感。然而,目前高职英语教学普遍存在中国文化失语现象。针对此问题,以“产出导向法”为理论指导,从“驱动”“促成”“评价”三个环节,探讨中国文化融入高职英语口语教学的模式与实践,提升学生文化传承意识,增强学生用英语讲述中国故事的能力。

白茅根提取物抑菌抗炎活性在口腔护理品中研究与分析

采用体外评价方法对白茅根提取物在口腔护理品中的抑菌抗炎活性进行研究。采用水、50%乙醇、乙酸乙酯、丙酮、石油醚作为溶剂提取白茅根提取物,将其加入到二氧化硅体系牙膏中,通过“划割牙龈+钢丝结扎+滴入牙周炎患者细菌培养物+高糖黏性食物饲养”构建20只5周龄SD大鼠牙周炎模型,测定白茅根提取物对大鼠牙周炎模型中的牙周致病菌[伴放线杆菌(Aa)、牙龈卟林单胞菌(Pg)、具核梭杆菌(Fn)、中间普菌(Pi)、硒赛类标菌(Tf)、变黑普菌(Pn)]、外周血、龈沟液内炎性因子[C反应蛋白(CRP)、肿瘤坏死因子-α(TNF-α)、白细胞介素-1β(IL-1β)、白介素-6(IL-6)、前列腺素E_(2)(PGE_(2))]及牙周健康指标[菌斑指数(PLI)、探诊深度(PD)、出血指数(BI)]的影响,采用小白鼠急性经口毒性实验验证白茅根提取物应用于口腔护理品中的安全性。结果显示,白茅根提取物能明显减少Aa、Pg、Fn、Pi、Tf、Pn,降低CRP、TNF-α、IL-1β、IL-6、PGE_(2)表达,具有抑制牙周致病菌活性,抵抗牙周炎症反应作用,能改善牙周健康,且安全性可靠。

数字媒介下白族大本曲的自我重塑

说唱艺术活态展演的特性为其立足传统的创造性发展预留了空间。经由抖音、微信的呈现与传播,白族大本曲从村落之壤拓展至网络空间。短视频、网络直播、微信唱曲以贴近民众日常行为的方式,使得媒介展演成为村落弹唱的形式拓展与功能延续,激活了先前处于半沉寂状态的大本曲演述传统。民众将地方文化因子整合进大本曲影像中,具象化地再现了存续于特定区域的人文景观。依托网络空间的开放格局,民间艺术得以互赏互鉴,走向尊重文化多样性的美妙境界。

HPLC法检测保健品口服液中的盐酸左旋咪唑

目的:建立高效液相色谱法检测保健品口服液中盐酸左旋咪唑的方法。方法:采用C18-WR色谱柱(4.6 mm×250 mm,5μm),流动相为乙腈-0.05 mol/L磷酸二氢钾溶液(用三乙胺调节pH=7)(25∶75,体积比),流速1.0 mL/min,检测波长210 nm,柱温30℃,进样量10μL。结果:盐酸左旋咪唑在8.634~86.340μg/mL时与峰面积线性关系良好(R=0.9997);低、中、高加标量对应的平均回收率分别为99.7%、99.2%和100.3%,RSD分别为1.40%、0.64%和0.78%,检测限为0.4317μg/mL。随机对市售16批样品进行检测,均未检出盐酸左旋咪唑。结论:该方法简便、快速、准确,可用于保健品口服液中非法添加盐酸左旋咪唑的检测。

高效液相色谱-蒸发光散射检测法同时测定口腔护理产品中10种季铵盐类杀菌剂

建立了同时测定口腔护理产品中10种季铵盐类杀菌剂的高效液相色谱-蒸发光散射(HPLC-ELSD)检测方法。在采用无水硫酸钠脱水后的膏体样品和粉末样品中加入乙醇,常温超声提取;液体样品用乙醇稀释。采用Acclaim Surfactant色谱柱(150 mm×4.6 mm,5μm)进行分离,以50 mmol/L乙酸铵缓冲溶液(pH=5.5)和乙腈为流动相进行梯度洗脱,外标法定量。结果表明,10种目标化合物在25 min内完成色谱分离,检出限(信噪比(S/N)=3)和定量限(S/N=10)分别为1.42~3.31 mg/L和4.25~9.94 mg/L。十八烷基二甲基苄基氯化铵和二十二烷基三甲基氯化铵在10~200 mg/L范围内线性关系良好,其余目标物在5~100 mg/L范围内线性关系良好,10种季铵盐类杀菌剂的相关系数(R^(2))均不小于0.9992。以阴性样品牙膏(膏体)、漱口水(液体)和洁牙粉(粉末)为样品基质,在不同添加水平下,10种季铵盐类杀菌剂的平均回收率为87.9%~103.1%,相对标准偏差(RSD,n=6)均不大于5.5%。本方法在液相色谱分离时采用表面活性剂色谱柱,目标化合物均获得较好保留,同时采用蒸发光散射检测器,部分无紫外吸收的目标化合物也能得到较高响应。通过添加适量无水硫酸钠去除膏体样品中的水分,有利于样品前处理和保护色谱柱。本方法精密度好,准确度高,适用于各种口腔护理产品中季铵盐类杀菌剂的测定,为口腔护理产品的质量安全监控提供了参考。采用本方法对109个常用口腔护理产品进行测定,十六烷基二甲基苄基氯化铵和十八烷基二甲基苄基氯化铵的检出率较高,1个牙膏样品中十八烷基二甲基苄基氯化铵的含量超出法规要求,测定值为1511 mg/kg。

由生活而文本:记忆、口述差异性背后的学理思考——以建岙红色口述故事采集为例

口述历史的差异性是当代公众历史建构中的一个关键问题。百年记忆,当事人回忆的可信度相对较高,相关人的口述也有一定的史料价值。中心与边缘、上层与下层,人所处位置的不同决定了所获信息、记忆建构的不同,也决定了不同个体口述史料的相异。综合来看,视野不同会让人有不同的认知,从而对事件因果甚至性质有不同的解释。考察建岙红色口述故事采集的采编实践,可对这些问题有更深入的认知。

积极心理学视角下二语口语产出中的情绪体验及影响因素研究

从积极心理学视角出发,采用量化和质性相结合的研究方法,探究高职院校的英语学习者在二语口语产出中的外语愉悦、外语焦虑水平及其影响因素。实证结果显示,高职学生在二语口语产出中体验到中等程度的外语愉悦及较高程度的外语焦虑,且外语焦虑水平显著高于外语愉悦水平。二语口语产出中的外语愉悦主要受教师个性特征、教师情感与评价支持,口语活动内容、难度与组织方式,课堂氛围等学习者外部因素影响;外语焦虑主要受英语水平,自我效能感,个性特征等学习者内部因素影响。该研究有助于全面把握二语学习者的情绪特征,对构建积极的二语课堂,开展二语教学实践,尤其是口语教学具有重要的教学启示。

中医药对外传播视域下大学英语口语课程模式研究

在中医药对外传播的背景下,此研究基于中国特色的产出导向法(POA),探讨了中医药院校大学英语口语递进式课程体系的构建与实施。以“驱动-促成-评价”为课堂实践流程,从初阶英语口语课到进阶英语演讲课程,让学生以中华传统文化及中医药文化为内容基石,用英语讲中国故事,推广中医药,在提高学生英语口语能力的同时,培养学生中外文化互鉴交流的能力和对外传播中医药的跨文化能力。

迭代、变迁与再造:有声读物的历史追溯与未来价值

政府工作报告连续10年写入“全民阅读”,有声读物成为数字化时代推动全民阅读的重要渠道。有声读物通过长时间的发展,已经趋于成熟。各时期的有声读物是如何影响社会和受众的?未来会给社会和人们带来哪些可能性?该文从我国有声读物的历史迭代出发,梳理出口语媒介、广播媒介及媒介融合时期有声读物的特点,并聚焦受众参与形式、接受主体及审美态度三方面的变迁,最后从媒介的创新、内容创作的解构及传受关系的重构三个维度构建有声读物未来的价值。追溯有声读物的历史,找准有声读物未来的发展方向,厘清受众的变化,明确有声读物的时代责任,能有效地助力有声读物的未来发展,也能促进全民阅读以更生动的形式开展。

A Real-Time Oral Cavity Gesture Based Words Synthesizer Using Sensors

The present system experimentally demonstrates a synthesis of syllables and words from tongue manoeuvers in multiple languages,captured by four oral sensors only.For an experimental demonstration of the system used in the oral cavity,a prototype tooth model was used.Based on the principle developed in a previous publication by the author(s),the proposed system has been implemented using the oral cavity(tongue,teeth,and lips)features alone,without the glottis and the larynx.The positions of the sensors in the proposed system were optimized based on articulatory(oral cavity)gestures estimated by simulating the mechanism of human speech.The system has been tested for all English alphabets and several words with sensor-based input along with an experimental demonstration of the developed algorithm,with limit switches,potentiometer,and flex sensors emulating the tongue in an artificial oral cavity.The system produces the sounds of vowels,consonants,and words in English,along with the pronunciation of meanings of their translations in four major Indian languages,all from oral cavity mapping.The experimental setup also caters to gender mapping of voice.The sound produced from the hardware has been validated by a perceptual test to verify the gender and word of the speech sample by listeners,with∼98%and∼95%accuracy,respectively.Such a model may be useful to interpret speech for those who are speech-disabled because of accidents,neuron disorder,spinal cord injury,or larynx disorder.