Measurement of soluble solids content in watermelon by Vis/NIR diffuse transmittance technique

INTRODUCTION Determination of fruit and vegetable quality is very important for both producers and processors. Watermelon as a delicious fruit has been widely ac-cepted in the world and its internal quality is impor-tant for consumers and merchants. The current fa-vorite way for checking a watermelon is to sense sound or vibration by slapping or rapping it. It is time consuming, tedious, and subject to error. Several studies on assessing the quality of watermelon based on its acoustic o…     

努力把《教师报·高中新课改专利》打造成为联接省内外高中的桥梁

为切实加强对全省新一轮普通高中新课程改革的指导与宣传．深入推进高中新课改的实施进程,探讨交流普通高中新课程改革背景下教学管理的有效途径和方式．10月T0日-16日,由《教师报·高中新课改专刊》（以下简称《专刊》）指导委员会组织部分示范高中、标准化高中校长组成考察团赴江苏、上海、浙江三地示范高中进行了参观学习．．陕西省教育厅副斤长吕明凯、基础教育二处处长张荣祖参加了此次考察学习活动．     

矿物质代谢紊乱与钙化性主动脉瓣疾病的发生和严重性相关（英文）

目的:探讨在肾功能正常或轻度受损(肾小球滤过率≥60 ml/(min·1.73 m2))人群中矿物质代谢紊乱与钙化性主动脉瓣疾病的发生和严重性是否相关。创新点:以具有代表性和临床价值的肾功能正常或轻度受损人群为研究对象,首次尝试通过骨转换生物标志物检测探讨钙化性主动脉瓣疾病的可能机制。方法:入选260例经超声心动图诊断钙化性主动脉瓣疾病患者(164例钙化性主动脉瓣硬化,96例钙化性主动脉瓣狭窄)和164例年龄及性别匹配对照组人群,检测矿物质代谢和骨转换生化标志物,应用多因素回归分析矿物质代谢与钙化性主动脉瓣疾病的发生和严重性的关系,并初步探讨可能机制。结果显示,从对照组到钙化性主动脉瓣硬化至狭窄患者,血钙、血磷、碱性磷酸酶和甲状旁腺素(i PTH)水平进行性升高,25羟-维生素D(25-OHD)水平进行性降低,各组间差异具有统计学显著性(P<0.001);同样,骨转换生化标志物骨钙素(BGP)、I型前胶原N端前肽(PINP)和β-胶原特殊序列(β-CTx)水平进行性升高,各组间差异具有统计学显著性(P<0.001)。在钙化性主动脉瓣狭窄患者中,i PTH水平与跨瓣峰值流速和平均跨瓣压差显著正相关,25-OHD则显著负相关。经校正相关因素后,多因素回归分析显示,血钙、血磷、碱性磷酸酶和i PTH水平升高及25-OHD水平下降和钙化性主动脉瓣疾病的发生和严重性密切相关。结论:矿物质代谢紊乱与钙化性主动脉瓣疾病的发生和严重性密切相关,异常骨转换可能是其发生机制。     

落实语言文字练习,提升语文核心素养

在小学语文教学中,要积极引导学生参加各种类型的语言文字练习,促使学生提升语言建构和应用方面的语文核心素养。通过词语练习、句式练习、读写练习这种层层递进的训练方式,让学生一步步提升语言能力。     

大学生啦啦队运动与高校体育文化建设

大学生啦啦队运动作为校园文化的一个组成部分,本身具有浓厚的校园文化特点,在推动校园文化的建设中起着重要的作用。     

程菲双侧坐骨结节骨骺损伤后训练与治疗方案的探索

通过文献资料的整理和国家体操队病历的回顾,从运动医学、训练学、解剖学、影像诊断学等角度探讨了女子体操运动员坐骨骨骺炎的发病规律和治疗方法.针对程菲的实际情况制订了治疗和康复计划,并在实践中取得了明显的效果.对高水平运动员伤病的防治提出了更有效的解决思路.     

家庭因素对前青春期儿童问题行为的影响及作用机制

前青春期(preadolescence)是指从童年晚期到青春期早期的过渡时期,这一时期出现的不良表现是个体后期问题行为的重要风险因素,因此也被认为是实施干预的关键时期。研究发现,许多患有行为障碍、多动症、冲动控制障碍和焦虑症等问题行为的人在前青春期首次发作,其中家庭环境因素有重要影响。     

Research on the teaching quality of compulsory education in China’s West rural schools

The paper has compared the quality of compulsory education of rural schools in West China with the counties, cities, and provincial capitals, and find out that there is a big gap between the quality of West rural and urban compulsory education, the quality of some grades of the rural primary schools has not achieved the basic requirement of the curriculum standards, the gap between the quality of junior high schools in rural and urban areas is relatively severe. The mean score and qualified rate in the subjects of Chinese, mathematics and English of West rural junior high students are distinctly lower than that of the urban and county schools. The main factor that leads to the bigger discrepancy between the urban and rural education quality mainly lies in the difference in the teaching force. Compared with urban schools, the teachers in rural schools is insufficient and poorly-trained, with less access to teachers’ professional development and support. The teaching quality in the West rural schools should be paid attention and improved in light of the rationale of educational equity.     

A few tips for improving English teaching in middle school

China has greatly increased contacts with foreign countries, thereby increasing the importance of English language. Modern time call lor modern methodologes in English teaching. How to balance the traditional methods with the new ones? How to improve. English teaching to meet the needs of modern time? This is a big challenge for English education , especially in middle school. This article seeks to address the integration of the four skills and the unity of accuracy and fluency, aiming to seek harmony in development; the usage of student-centred rather than teacher-centred style and the demand for the high quality teachers.     

Edge-oriented compression coding on image sequence

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