本研究以骏枣的茎段、叶片和金丝小枣幼胚的子叶为材料，建立了这两个枣品种组织培养的植株再生体系。结果表明： (1)间歇性灭菌可以降低骏枣茎段外植体的霉菌污染率，培养基中
Purpose: The purpose of this study was to describe the meaning of the lived experience of family caregivers caring for their loved ones who were dependent upon
Objective: The purpose of this study is to assess the awareness on cardiac rehabilitation (CR) in patients with coronary heart disease (CHD).Methods: Inpatients
Background: Recruiting research participants from primary care in rural Appalachia is a major challenge and can be influenced by cultural characteristics,making
This article introduces safety management strategies of nasopharyngeal specimen collection from suspected cases of coronavirus disease 2019 in a tertiary design
羊草(Aneurolepidium chinensis)是分布于我国北方天然草地面积较广、营养价值较高而且较耐盐碱的最优良的禾本科牧草,是经济价值较高的草原类型。羊草具有耐寒、耐旱、耐湿、耐土壤瘠薄和一定的耐盐碱能力,适应范围很广。但是由于近年来人们的过度开发和利用,造成天然羊草草原的退化。羊草是建立人工草地和治理盐碱化草地的理想草种,虽具有一定的抗盐碱能力,一直未能很好地发挥改良盐碱地的作用。根
在水稻Lemont×Dular杂交组合以单粒传方法构建的含有123个品系的重组自交系群体(RILs，F10)中发现了裂颖突变体和叶片黄转绿突变体。本文研究了裂颖突变体的形态、遗传及解剖
文章通过走访调查和文献资料法对古敢水族乡传统体育文化的传承现状及影响因素进行研究,发现这些古老而内容丰富的水族传统体育文化资源如今已濒临灭绝。为了进一步挖掘和保