文登城区幼儿和小学生龋病调查

来源 :中国校医 | 被引量 : 0次 | 上传用户:lifei111
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
龋病是影响儿童青少年健康的常见病与多发病之一.严重的龋病会给儿童青少年的生长发育(特别是颌面部的发育)和躯体、心理健康造成难以弥补的影响.WHO已将龋病列为世界第三种重点防治的疾病.
其他文献
Using a deep neural network,we demonstrate a digital staining technique,which we term PhaseStain,to transform the quantitative phase images (QPI) of label-free
期刊
The development of high-power,broadband sources of coherent mid-infrared radiation is currently the subject of intense research that is driven by a substantial
期刊
广西栽培芝麻历史悠久,常年种植面积25—30万亩,最多的1965年达54万多亩,一般亩产芝麻籽15公斤左右。芝麻种子含油量高(白芝麻品种含油量一般为50—55%,杂色芝麻为48—51%,黑
Analog-to-digital converters (ADCs) must be high speed,broadband,and accurate for the development of mode information systems,such as radar,imaging,and communic
期刊
During the past decades,major advances have been made in both the generation and detection of infrared light;however,its efficient wavefront manipulation and in
期刊
为了解新疆乌鲁木齐市维吾尔族 (简称维族 )、哈萨克族(简称哈族 )和汉族初一年级至高三年级学生近视眼患病状况 ,我们于 1999年进行了监测。1 对象和方法1.1 调查对象 以
2.主/副开关电源电路(1)二次开机后检查ICl(L6599D)的7脚,若低于1.5 V就会停振(7脚正常电压为1.66 V,待机时为1.2 V),一般ICl的7脚低于1.5 V停振,是由于PFC电路工作不正常或
Macroscale fluorescence imaging is increasingly used to obsewe biological samples.However,it may suffer from spectral interferences that originate from ambient
期刊
The potential for improving the penetration depth of optical coherence tomography systems by using light sources with longer wavelengths has been known since th
期刊
全球DLP投影机领导品牌奥图码(Optoma)近日带来一则爆炸性消息:3D&1080P家用投影机仅售4999元!消息一出,激起市场强烈反响,奥图码此举将彻底终结720P市场。为了让广大消费者