Results 21 to 30 of about 1,021,970 (172)

原发性食管恶性黑色素瘤的X线及CT诊断

open access: yesZhongguo 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  

Justice in coexistence: Pastoralism and large carnivores on the Qinghai‐Tibet Plateau

open access: yesPeople and Nature, Volume 8, Issue 7, Page 2186-2199, July 2026.
Abstract The conflict between livestock husbandry and large carnivore conservation presents significant challenges in grassland ecosystems worldwide. Achieving sustainable coexistence among herders, livestock and large carnivores requires reconciling diverse perspectives and interests through equitable, inclusive and fair processes that address both ...
Yufang Gao, Yue Yu
wiley   +1 more source

在宅療養者とその家族・関係スタッフにおける要食事介護者向けアイスクリーム活用可能性についての検討 [PDF]

open access: yes, 2022
アイスクリームは食欲不振時にも食べやすく,低栄養の改善にも使われるが,溶けやすい性質から嚥下機能低下や喫食に時間を要する場合は提供が難しい。そこで,考案した要食事介護者向けアイスクリームが介護食として活用できるかの可能性を検討するため,訪問栄養食事指導を利用する在宅療養者とその家族・関係スタッフを対象にアイスクリーム喫食後質問紙調査を行い,コレスポンデンス分析ならびにCS分析を行った。在宅療養者26名と家族・関係スタッフ31名の回答結果より,「食べ終わりまでアイスクリームとして楽しめたか」の質問に対して「
荊木, 文子   +6 more
core   +1 more source

Seasonal Spatial Population Density Distribution Dynamics of Lynx and Ungulate Prey in Cold‐Temperate Coniferous Forests 寒温带针叶林猞猁和有蹄类猎物种群密度空间分布的季节性动态研究

open access: yesIntegrative Conservation, Volume 5, Issue 2, Page 225-235, June 2026.
This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang   +11 more
wiley   +1 more source

La3+ Vacancy Mediated Enhancement of Near‐Infrared Emission in Cr3+‐Activated La2MgTiO6 Phosphors for Multifunctional Applications

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Near‐infrared (NIR) phosphors with broadband and efficient emission are pivotal for the performance of NIR phosphor‐converted light emitting diodes (pc‐LEDs). In this study, the double perovskite phosphor La2MgTiO6:Cr3+ phosphor with broadband emission in the range of 650–950 nm was prepared.
Xu Qian   +7 more
wiley   +1 more source

3D Printed High‐Strength Hydrogel for Dual Release of Cu2+ and Ag+ Ions to Enhance Bone Repair and Antibacterial Properties

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Bone restoration is often hindered by the spatiotemporal dysregulation of immune and regenerative signals. Conventional bio‐inert implants, providing only passive support, fail to modulate this microenvironment, leading to infections and poor healing.
Zhizhong Sun   +8 more
wiley   +1 more source

幽门螺杆菌感染与反流性食管炎关系的初步研究 附视频

open access: yesZhongguo 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  

冬春季狍取食营养策略及影响因素研究

open access: yes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  

Relative Habitat Suitability of the Gray Fox (Urocyon cinereoargenteus) in the Central Great Plains 大平原中部灰狐 (Urocyon cinereoargenteus) 的生境相对适宜性

open access: yesWildlife Letters, Volume 4, Issue 2, Page 94-101, June 2026.
Although once abundant across its range, gray foxes (Urocyon cinereoargenteus) are purportedly declining. While range maps indicate that gray fox potentially occur throughout the central United States, contemporary distribution maps are needed. We developed a Habitat Suitability Model for six states, leveraging gray fox presence data in an ensemble ...
Daniel J. Benson   +4 more
wiley   +1 more source

食管黏膜脱落细胞DNA倍体联合血清标志物检测在食管癌诊断中的价值

open access: yesZhongguo shiyan zhenduanxue, 2016
目的探讨血清肿瘤标志物神经元特异性烯醇化酶(NSE)、癌胚抗原(CEA)联合食管黏膜脱落细胞DNA倍体在食管癌诊断中的应用价值。方法选取我院收治的经胃镜诊断为食管病变患者128例,其中64为食管癌患者,64例为食管良性病变患者,使用罗氏电化学发光免疫系统检测其血清NSE、CEA水平,采用ICM检测DNA倍体水平,分析其特异性及敏感性。结果 64例食管癌患者中有45例DNA倍体为阳性,64例食管良性病变患者中,3例DNA倍体异常,食管癌组患者的NSE、CEA水平均明显高于良性病变组,组间比较有明显差异 ...
李德生   +4 more
doaj  

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