Results 21 to 30 of about 10,462 (122)
Taxonomic and functional diversity of urban bees of the world
Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso +10 more
wiley +1 more source
Institutional lessons from the Nordic management model
Abstract To improve wildlife management outcomes, in terms of reaching management goals and increasing legitimacy, Nordic countries have developed institutional systems involving stakeholders that aim for a more inclusive and participatory model.
Jens Nilsson +2 more
wiley +1 more source
目的探讨食物特异性IgG抗体与儿童过敏性紫癜的相关性。方法采用ELISA方法检测209例儿童过敏性紫癜患者血清中13种食物特异性IgG抗体。结果 209例过敏性紫癜患儿中有139例检测到1-13种食物特异性IgG阳性升高,总阳性率为66.5%(139/209);特异性IgG阳性率较高(10%以上)的主要致敏食物有2种,分别为鸡蛋(39.2%)和牛奶(38.8%);食物特异性IgG浓度分级结果表明,鸡蛋和牛奶均可引起不同程度的食物不耐受,而其余多数食物则以引起轻度不耐受(即IgG浓度为+1级)为主 ...
王惠妩 +4 more
doaj
Psychometric framework for coexistence with large carnivores
Abstract Human–carnivore coexistence is essential for biodiversity conservation, yet measuring the attitudes and behaviors that support it remains methodologically challenging. We developed psychometric scales to assess willingness to coexist with carnivores and the underlying beliefs of this coexistence through an iterative expert elicitation process ...
Benjamin Ghasemi +14 more
wiley +1 more source
确定食物选择性不仅是估计动物生境营养容纳量和进行生境评价及改良等种群管理学问题的基础,它也将为生境选择、建立最优取食模型和探讨种间关系等许多生态学方面的问题提供有价值的信息,因此成为食性研究中一项主要的工作。在国外,食物选择性(food selectivity)这一术语在食性研究中通常与食物偏爱性(food preference)相混淆,在食性文献中常为后者所代替。在国内,食物选择性的确定仅在最近的有蹄类食性研究中得到重视(陈化鹏等1989),并且在已往的食性研究中,主要食物(Principal ...
陈化鹏, 马建章, 高晓芳
doaj
Abstract Site fidelity is the tendency for animals to repeatedly return to the same locations, either within or between years. Site fidelity enables animals to utilize knowledge of previously visited locations, including assessments of seasonal variations in health and mortality risks (e.g., predation), resource availability, and social benefits such ...
Tobias A. Ross +13 more
wiley +1 more source
食管炎是临床上最常见的食管疾病,一般是由食管黏膜受到刺激或者损伤,继而引发食管黏膜充血水肿所致。根据病因不同可以分为反流性食管炎、真菌性食管炎、病毒性食管炎、化脓性食管炎等,其中真菌性食管炎是特殊的食道炎症,主要由于霉菌侵入食管粘膜组织导致食管感染,属消化道念珠菌病之一。食管破裂是食管病变的严重并发症,病情严重者可能引起穿孔,继而导致纵膈感染,病情进展迅速,预后不良,甚至死亡[1]。食管炎并发食管破裂者极其罕见,我院收治1例食管炎并发食管破裂、感染性休克的患者,现报告如下。
张端 +4 more
doaj
Predictive evolutionary genomics: principles, validation, and practice
Summary Climate change and habitat loss are driving rapid evolutionary responses in populations world‐wide, which creates an urgent need for evolutionary forecasting in conservation and agriculture. Such forecasting can be categorized into three time scales: trait‐based models that use multivariate quantitative genetic equations to project correlated ...
Daniel Ortiz‐Barrientos +5 more
wiley +1 more source
ABSTRACT Household food expenditure continues to be a key factor in ensuring the realization of the Human Right to Adequate Food. Particularly in Brazil, access to food can be limited by economic constraints in vulnerable families, especially among farming families, who have been more vulnerable to food insecurity in recent years in the country.
Lucas de Almeida Moura +3 more
wiley +1 more source
目的提高对于原发性食管恶性黑色素瘤影像的认识。方法回顾性分析4例经手术病理证实的原发性食管恶性黑色素瘤患者的X线及CT影像资料,并复习相关国内外文献。结果 4例患者术前均行上部胃肠道口服钡餐造影及多层螺旋CT检查。肿瘤均为单发,2例肿瘤位于食管下段,2例位于食管中下段。病变均突向腔内,2例呈结节样,2例为不规则肿块。4例中1例螺旋CT证实有食管旁淋巴结增大。4例中1例术前考虑为原发性食管恶性黑色素瘤,3例考虑为食管癌。结论原发性食管恶性黑色素影像表现缺乏特异性,当食管中下段发现肿瘤且梗阻不明显时 ...
刘岳峰 +4 more
doaj

