Results 21 to 30 of about 2,150 (118)
Staghorn ferns are among the most highly valued ornamental plants but several species experience major extinction threats. Here we establish a DNA barcoding reference dataset to support reliable identification of cultivated staghorn ferns to secure species identity of individuals at all life stages that are used in ex situ and in situ conservation of ...
Kaikai Wang +6 more
wiley +1 more source
以广州动物园出生的1胎2只非洲幼狮为研究对象,进行全人工哺育研究。人工哺育以PetAG KMR作为代乳,40日龄时开始饲喂固体食物。对幼狮1~50日龄的生长发育数据进行采集和分析,结果显示:幼狮在发育早期体重增长较快,雌、雄幼仔50日龄的增重量分别为4 884 g 和4 074 g,增重率分别为411.80%和307.24%; 21日龄雌、雄体长增长率分别为34.38%、22.22%; 尾长增长率为21.43%、26.67%; 胸围增长率为20.00%、32.00%。相同日龄的幼仔 ...
苏 力 吴其锐 陈兴永 李耀智 林杏要 陈绮君
doaj
A content analysis of 154 nature education lesson plans from China showed that educators designed diverse programs tailored to age‐specific developmental and social needs. Most focused on personal growth, such as cognitive development, mental well‐being, and family bonding, but few explicitly addressed environmental conservation goals.
Yue Li, Danning Lu, Xin Yu, Chuan Liao
wiley +1 more source
目的探讨血钙水平与婴幼儿行为发育相关性。方法选择为2010年8月-2012年8月来我院儿保门诊的6月-3岁婴幼儿120例进行血钙检测,并进行行为发育相关指标测定。结果本组婴幼儿血钙含量低的为12例,占10%,其他血钙含量都正常。血钙正常组的头围、身长与体重均明显高于缺钙组,血钙正常组的MDI得分与PDI得分都明显高于缺钙组,都有统计学差异 ...
何文, 董敏
doaj
Abstract There are considerable data documenting the importance of early experiences for healthy human development. Though widely accepted amongst mental health clinicians, developmental researchers and early childhood policymakers, this information is not well known by much of the public.
Sarah Hinshaw +5 more
wiley +1 more source
亲代抚育对于圈养大熊猫幼仔个体行为的发育具有重要意义。而现实中存在一些无母幼崽,为实现对无母幼崽的亲代抚育,对参试母兽分别采用由幼仔模型、实体、尿液和乳汁这些信号组成的多种刺激方式,进行代亲抚育培驯。培驯的结果表明:采用无母幼仔模型、尿液、乳汁等多种信号的刺激,可使受驯母兽熟悉并接受该幼仔,达到义母育幼目的。
周应敏 +4 more
doaj
Impacts of COVID‐19 on early childhood mental health
Abstract This study investigates the impact of the COVID‐19 pandemic on young children's mental health and their engagement in mental health services in the midwestern United States. Previous research investigating the impact of COVID‐19 on young children's mental health service utilization has rarely included children under 5 years.
Marissa Marsolek, Kathy Dowell
wiley +1 more source
2016年6~9月,采用扫描取样法(scan sampling)和目标取样法(focal sampling)对哈尔滨北方森林动物园内的雌雄1对白枕鹤的自然育幼行为进行了观察和记录,得出了繁殖期白枕鹤自然育幼的行为规律。结果为:觅食22.82%; 护理19.67%; 静栖13.32%; 游走19.72%; 眺望13.61%; 鸣叫6.53%; 打斗1.21%; 展翅2.61%; 护雏0.41%。在育幼期,雄鹤的鸣叫行为显著高于雌鹤,雌鹤的护理、静栖及护雏行为高于雄鹤; 雏鹤的静栖行为逐渐减少 ...
徐 婧 张小艳 张昕茹 何相宝 田秀华 李夏莎 张 宇
doaj
Abstract Emotions play an important role in fostering positive parenting and healthy child development. This qualitative study explored the affective experiences of racially diverse US fathers with low income across the prenatal, postnatal, and early childhood periods. Semi‐structured interviews were conducted with 24 fathers. Interview questions asked
Joyce Y. Lee +5 more
wiley +1 more source
2015年10—11月及2016年5—6月,采用扫描取样法对济南动物园13只笼养黑叶猴进行日行为时间分配及其影响因素研究。结果如下:(1)济南动物园黑叶猴日行为中,休息、社会性行为、取食、运动和其他分别占总时间的60.41%、13.56%、13.12%、12.05%和0.86%。(2)黑叶猴成年与亚成年个体的运动和取食差异显著 ...
田明亮#郭爱霞#谢绪昌刘青薛媛
doaj

