Results 101 to 110 of about 52,467 (200)
ABSTRACT Population aging is a problem that countries around the globe are facing; it comes with complex healthcare needs. Different countries take different approaches to solving these issues. In the United States, proposed legislation related to hospice and palliative care emerged from a history of hospice fraud and specialty physician shortages.
Edith‐Marie Green
wiley +1 more source
提出一种基于小波-包络谱能量提取振动信号特征并进行故障诊断的新方法。首先应用小波分析对振动信号进行降噪处理,然后与希尔伯特变换相结合,提取振动信号的低频和高频包络,最后对包络信号进行谱分析及能量特征提取。实验结果表明,该方法对提取高压真空断路器机械振动信号的特征是有效的,可为故障诊断提供依据。
赵洋, 刘汉宇, 曾庆军
doaj
A Tale of Two Programs? Stigma and Administrative Burdens in CHIP and Medicaid
ABSTRACT One contributing factor to undersubscriptions is administrative burdens. To explore whether program stigma affects attitudes about administrative burdens, a survey (N = 2204) was fielded to assess differences in attitudes about seven policies decreasing administrative burdens and two policies increasing administrative burdens.
Simon F. Haeder
wiley +1 more source
本实验从抗原提取方法入手,采用梯度盐水法对加热和未加热的肺腺癌细胞SPC-A-1进行肿瘤细胞提取物提取,以此作为抗原,比较不同方法提取的肿瘤抗原在体外与人外周血淋巴细胞共同培养后对肺腺癌细胞SPC-A-1的杀伤活性,探讨肿瘤抗原的有效获取方法以及不同浓度抗原对肿瘤细胞的体外杀伤效果,为肿瘤抗原的获取和临床应用提供实验数据。1材料和方法1.1细胞株SPC-A-1,购自上海生物细胞研究所。
赵鑫 +7 more
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
wiley +1 more source
[目的] 水土保持措施类型及其配置模式复杂繁多,准确识别与精细化提取水土保持措施详细配置信息是获取水土保持措施因子值的基础。[方法] 水土保持措施信息获取方式主要有传统的野外调查、卫星遥感影像和无人机近景摄影等,其识别与提取方法主要包括目视解译、传统的机器学习、面向对象分类方法及深度学习模型。通过梳理国内外水土保持措施识别与提取方法的研究成果,总结存在的不足并提出研究展望。[结果] 在语义分割中未来的特征融合与多模态学习、弱监督与半监督学习、集成学习和元学习等均可被运用到水土保持措施提取中。[结论 ...
田培, 任益伶, 陈妍
doaj
褐马鸡是中国特有的国家Ⅰ级保护濒危鸟类,为了解决野生褐马鸡分子生物学研究中存在的取样局限性,采用非伤害性取样和非损伤性取样,对褐马鸡微量血液、皮、脚垫、指甲、羽毛、陈旧标本的皮以及粪便的DNA提取进行了初步研究。结果表明,从褐马鸡微量血液(10μL)中可以提取到浓度和纯度高的基因组DNA(41.85μg);从褐马鸡的皮、脚垫、指甲、羽毛中可以提取出基因组DNA并扩增出目标片断;陈旧标本的皮能够提取到基因组DNA。该研究将拓宽褐马鸡分子生物学研究的采样范围,并可以提高野外非损伤性取样在保护遗传学中的应用。
武玉珍, 王孟本, 张峰
doaj
为了提高玉米油精炼的附加值,并实现硅藻土的可循环利用,以玉米油精炼副产物含蜡脂的硅藻土为原料,采用超声辅助水剂法提取玉米蜡脂,考察了不同提取条件对玉米蜡脂提取率的影响,并通过响应面法优化玉米蜡脂提取的工艺条件。结果表明:超声辅助水剂法提取玉米蜡脂的最佳工艺条件为超声功率480 W、超声时间4 h、提取温度95 ℃、料液比1∶ 3,在此条件下玉米蜡脂提取率为(59.46±0.91)%。综上,超声辅助水剂法可以有效提取硅藻土中的玉米蜡脂。In order to improve the corn oil ...
韩丹1,孙立斌2,3,汪鸿2,于殿宇3,王俊国1 HAN Dan1, SUN Libin2,3, WANG Hong2, YU Dianyu3, WANG Junguo1
doaj +1 more source
Read the free Plain Language Summary for this article on the Journal blog. Abstract Stand functional diversity (RaoQ) and stand functional composition in terms of the functional traits of the component species (CWM trait) are critical for ecosystem processes and functioning, such as litter decomposition and associated nutrient cycling.
Bai‐Yu Yang +12 more
wiley +1 more source
[A multiscale feature extraction algorithm for dysarthric speech recognition]. [PDF]
Zhao J +5 more
europepmc +1 more source

