Results 21 to 30 of about 916,452 (164)
, 2002 耳石重量在年龄组间重叠较少 ,大小相近的个体 ,年龄大的 ,即生长慢的耳石重量比年龄小的、即生长快的大 ,不同龄组之间耳石重量有显著差异 (P <0 .0 5 )。按年龄组以耳石重量与相应的体长作图 ,可初步判断观测年龄的可靠性 ,分析耳石重量频率分布能分离出体长相近、年龄不同的个体 ,其结果与耳石年轮观测的基本一致。耳石重量与年龄呈显著线性正相关 (P <0 .0 5 ) ,用耳石重量与年龄关系估算的年龄与从耳石上直接读取的年龄无显著差异 (P>0 .0 5 ...
沈建忠,曹文宣,崔奕波,常剑波
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四川大学学报. 自然科学版, 2002 根据2001和2002两年间6个月的标志重捕资料,在对分布于四川西北部若尔盖草原的青海沙蜥(Phrynocephalusvlangalii)的体长、体重和尾长3组数据进行相关分析的基础上,分别对这3组数据进行聚类分析.最后选取体长的聚类分析结果把青海沙蜥的所有个体分成3个年龄组,3个年龄组的体长范围分别是:26～36mm;37～50mm;51～65mm.各年龄组体长、体重和尾长平均值差异的F检验结果,说明用体长划分年龄较为合理.青海沙蜥种群的年龄结构基本上呈金字塔形,但第II年龄组个体数比例较小 ...
吴鹏飞 +6 more
doaj
Integrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee +5 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 272-282, March 2026.ABSTRACT Objective Complete hydatidiform mole and coexisting normal fetus (CHMCF) is a rare condition for which there is significant heterogeneity in diagnosis, counseling and management of complications. The objective of this study was to summarize the prevalence of clinical outcomes in reported cases of CHMCF.
N. Salmeri +8 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2002 目的 对不同年龄段老年性骨质疏松的诊断提供定量CT骨密度范围值。方法 用日本ST5 0 0 0TCT扫描机检测 184例 6 0～ 79岁老年腰椎 2 - 4椎体定量CT。结果 随年龄增长腰椎骨密度定量CT值下降 ,女性较男性更明显。男性 82例 ,女性 10 2例。结论 骨质疏松与年龄呈正相关 ...
韩邕, 吕全勇, 孟令辉, 张光
doaj
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty +5 more
wiley +1 more source
, 1991 本工作试图从想象的丰富性和特点来比较想象的年龄差异。被试共45例,分三个年龄组(少年、青年和老年),每组15例(男8、女7)。测试材料为抽象直线图形和Droodles.结果表明:①对图想象的总数随增龄而减少;②不同年龄组想象的内容有不同倾向;③对图形想象的种类和新颖性随增龄而减少;④老年组想象的整体性明显低于青年组和少年组,后两组相接近。可见,少年具有想象丰富、活跃和新颖的特点,在教育工作中应予重视 ...
孙长华 +3 more
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Zhongguo shiyan zhenduanxue, 2011 目的探讨不同组织学类型的子宫肉瘤临床病理特点。方法应用形态学观察及免疫组织化学染色回顾性分析78例子宫肉瘤临床及病理特点,并复习相关文献。结果 （1）78例子宫肉瘤中癌肉瘤35例（44.9%）、平滑肌肉瘤25例（32.1%）、子宫内膜间质肉瘤16例（20.5%）、腺肉瘤2例（2.6%）。（2）35例癌肉瘤,患者年龄16-75岁,平均年龄57.3岁。肿瘤多位于宫腔内（27例,77.1%）。肉瘤成分中含有同源性成分32例（91.4%）,含有异源性成分3例（8.6%）。病理分期以I期最多（21例,60 ...
张亚男 +5 more
doaj
Zhongguo shiyan zhenduanxue, 2020 目的探讨育龄妇女和新生儿TORCH的感染情况。方法对2012至2018年在广东医科大学附属医院接受TORCH筛查的育龄妇女和新生儿的资料进行回顾分析,统计检查结果。结果育龄妇女2012至2018年的风疹病毒、巨细胞病毒IgG抗体各年份的阳性率均高于刚地弓形虫、单纯疱疹病毒(P0.05)。育龄妇女低龄组HSVⅠ/Ⅱ-IgM阳性率高于高龄组,差异具有统计学意义 ...
刘丽琴, 黄必堂, 钟琼
doaj
“The Benefits Far Outweigh the Challenges”: Examining Practices of Queer Shared Households in Canada
Sexuality, Gender &Policy, Volume 9, Issue 1, February 2026.ABSTRACT This paper focuses on the experiences and practices of LGBTQ+ adults in Canada living in shared housing arrangements. Drawing on qualitative focus group data from eight participants aged 32–67 in three Canadian cities, we identify and discuss three key themes that characterize these arrangements: (a) the material drivers and impacts of shared ...
Celeste Pang +4 more
wiley +1 more source