Results 21 to 30 of about 32,900 (194)
Zhongguo shiyan zhenduanxue, 2011 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
Geographic risks to functional groups of mammals and birds from habitat loss in Mexico
Conservation Biology, EarlyView.Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás +4 more
wiley +1 more source
Overreliance on Orthographic Similarity in L2‐Japanese Conceptual Processing by L1‐Chinese Learners
International Journal of Applied Linguistics, EarlyView.ABSTRACT Orthographic and phonological similarities between first (L1) and second (L2) languages can facilitate L2 processing. Particularly, L1‐Chinese learners of L2‐Japanese can benefit from the shared morphosyllabic Chinese characters (Japanese kanji/Chinese hanzi) because of their similar orthographies.
Xuehan Zhao, Kexin Xiong, Sachiko Kiyama
wiley +1 more source
Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
New Phytologist, EarlyView.Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2000 目的 探讨幽门螺杆菌与反流性食管炎的关系。方法 选取７８例反流性食管炎患者，胃镜检查时取活检行快尿素酶检测幽门螺杆菌，病理检查证实慢性萎缩性胃炎及萎缩程度，住院患者同时行血清抗的门螺杆菌抗体检测，对照组为７８例无反流性食管炎的同期就诊患者。结果７８例反流性食管炎组幽门螺杆菌阳性者２４例（３１％），对照组幽门螺杆菌阳性者为５４例（６８％），统计学比较二者有显著性差异（Ｐ＜０．０１）。反流性食管炎组的慢性萎缩性胃炎发生率及萎缩程度均低于对照组。结论 ...
盛传伦, 周丹
doaj
Veterinary Dermatology, EarlyView.ABSTRACT Background Identification of offending foods in dogs with adverse food reactions is usually based on “deterioration” during open food challenges. Objectives To examine the placebo effect during double‐blinded, placebo‐controlled food challenges using a predefined set of criteria for relapse.
Evi I. Sofou +4 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2000 目的 探讨幽门螺杆菌与反流性食管炎的关系。方法 选取７８例反流性食管炎患者，胃镜检查时取活检行快尿素酶检测幽门螺杆菌，病理检查证实慢性萎缩性胃炎及萎缩程度，住院患者同时行血清抗的门螺杆菌抗体检测，对照组为７８例无反流性食管炎的同期就诊患者。结果７８例反流性食管炎组幽门螺杆菌阳性者２４例（３１％），对照组幽门螺杆菌阳性者为５４例（６８％），统计学比较二者有显著性差异（Ｐ＜０．０１）。反流性食管炎组的慢性萎缩性胃炎发生率及萎缩程度均低于对照组。结论 ...
盛传伦 +3 more
doaj
野生动物学报, 2023 为了对比分析冬季和春季狍（Capreolus pygargus）取食营养策略及其影响因素，2020年11月—2021年5月，在吉林珲春东北虎国家级自然保护区进行野外调查和样本采集等工作，共收集狍粪便38份，其中冬季26份，春季12份；植物样本953份，其中冬季542份，春季411份。通过分析狍食性，测定可食植物宏营养和微营养含量，以及定量环境中食物获得性和可食植物的营养含量，对比分析冬春季狍的食物组成和营养策略。结果表明：冬春季狍食物组成和食物可获得性存在差异 ...
齐琦, 包衡, 姜广顺
doaj
Preparation, structure and antioxidant activity of EGCG palmitate(EGCG棕榈酸酯的制备、结构及其抗氧化活性)
Zhejiang Daxue xuebao. Lixue ban, 2003 通过表没食子儿茶素-3-O-没食子酸酯(EGCG)与棕榈酰氯的酯化制备脂溶性的EGCG棕榈酸酯,利用高速逆流色谱对其进行分离和纯化,获得一种新的单取代的长碳链酰基儿茶素-表没食子儿茶素-3-O-没食子酸-4'-棕榈酸酯,并对其分子结构进行了元素分析、IR、MS和1H-NMR等表征.用活性氧法(AOM)考察并比较了脂溶性的表没食子儿茶素-3-O-没食子酸-4'-棕榈酸酯和特丁基-4-羟基茴香醚(BHA)、2,6-二特丁基对甲酚(BHT)、叔丁基对苯二酚(TBHQ)在大豆色拉油中的抗氧化活性.结果表明 ...
CHENPing(陈平) +2 more
doaj +1 more source