Results 21 to 30 of about 4,883 (118)

Is parvovirus B19 infection upsurge in 2023–2024 associated with adverse pregnancy outcome?

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 3, Page 307-313, September 2025.
ABSTRACT Objective A surge in parvovirus B19 infections has been reported in 2023–2024 across Europe and the USA, raising concerns about the associated perinatal risks. The aim of this study was to compare perinatal outcomes following maternal parvovirus B19 infection during the 2023–2024 period with those from a pre‐2023 cohort.
S. Prasad   +22 more
wiley   +1 more source

Uncovering the Nanozostera japonica species complex suggests cryptic speciation and underestimated seagrass diversity

open access: yesNew Phytologist, Volume 247, Issue 5, Page 2086-2097, September 2025.
Summary The importance of marine angiosperms, or seagrasses, as foundation species for marine coastal ecosystems is in marked contrast to their low species number of only 70 described taxa. Seagrass species tend to have very similar overall morphologies dictated by hydrodynamic forces of the ocean environment.
Xiaomei Zhang   +14 more
wiley   +1 more source

The application of genetic algorithms in LEED(遗传算法在低能电子衍射结构分析中的应用)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2000
提出了一种在低能电子衍射(LEED)结构分析中自动搜寻最佳模型的优化方法——遗传算法和张量LEED相结合的联合方法。这种新方法的特点是能在全部参数变化范围内自动搜寻,避免了陷入“局域”优化模型的困难中。本文给出了这一方法的应用实例,并且展望了这种方法在表面结构研究中的应用前景。
HEJiang-ping(何江平)   +2 more
doaj   +1 more source

Stress driver analysis of annual wild soybean (Glycine soja) population decline and implications for the protection of wild soybean populations in China

open access: yesEcological Solutions and Evidence, Volume 6, Issue 3, July–September 2025.
Over the past three decades, a large number of natural wild soybean populations have been declining inexplicably or even have disappeared and their distribution area has significantly decreased in China, and population losses continue unabated. Therefore, this study investigated 20 herbaceous communities of wild soybeans in various habitats in ...
Ke‐Jing Wang, Xiang‐Hua Li
wiley   +1 more source

基于油色谱数据的变压器状态智能诊断方法

open access: yesGaoya dianqi, 2004
利用变压器的油色谱试验数据对神经网络进行训练,将训练后的神经网络用于变压器的状态诊断。同时利用遗传算法优化神经网络的结构。算例结果表明,利用遗传算法和神经网络相结合的人工智能方法可以有效地诊断变压器的状态。
戴仁昶, 赵寿生
doaj  

Simple sequence repeats and their expansions: role in plant development, environmental response and adaptation

open access: yesNew Phytologist, Volume 247, Issue 2, Page 504-517, July 2025.
Summary Repetitive DNA is a feature of all organisms, ranging from archaea and plants to humans. DNA repeats can be seen both in coding and in noncoding regions of the genome. Due to the recurring nature of the sequences, simple DNA repeats tend to be more prone to errors during replication and repair, resulting in variability in their unit length ...
Sridevi Sureshkumar   +3 more
wiley   +1 more source

Diversity and Ecological Factors Influencing Medicinal Plant Use Among Ethnolinguistic Groups in the Philippines 21世纪菲律宾人类文化语言学族群药用植物多样性及其生态关联研究

open access: yesIntegrative Conservation, Volume 4, Issue 2, Page 231-245, June 2025.
Plant order‐level Sankey plot illustrating plant use of ethnolinguistic groups for key disease types based on organ systems and use. Each node represents the strength of its interaction or usage. ABSTRACT Many human populations rely on natural remedies for health and healing, with traditional medicinal plants playing a vital role in diverse ...
Krizler C. Tanalgo   +15 more
wiley   +1 more source

遗传算法在二阶PMD补偿中的应用及硬件实现

open access: yesGuangtongxin yanjiu, 2007
文章简要介绍了几种现代非线性优化算法,在两级偏振控制器和时延线级联补偿器结构的基础上,采用遗传算法作为偏振模色散(PMD)补偿中的反馈控制算法进行全局最优化,使偏振度(DOP)实现最大化,实现PMD补偿。文章对遗传算法在二阶PMD补偿中的应用进行了理论分析,并且设计了以TMS320C6711DSK为核心硬件的整套控制结构。
毕辉, 李唐军, 刘向春, 王目光
doaj  

Intragenic PNPLA1 duplication in Labrador retrievers with nonepidermolytic ichthyosis

open access: yesVeterinary Dermatology, Volume 36, Issue 3, Page 314-320, June 2025.
Background – Ichthyoses represent a heterogeneous group of cornification disorders characterised by epidermal scaling. Objectives – To describe the clinical, histopathological and genetic analysis of a Labrador retriever with nonepidermolytic ichthyosis, and the results of a Labrador retriever population screening for a newly detected PNPLA1 genomic ...
Stefan J. Rietmann   +7 more
wiley   +1 more source

Incremental yield of exome sequencing over standard prenatal testing in structurally normal fetuses: systematic review and meta‐analysis

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 552-559, May 2025.
ABSTRACT Objective To critically review the literature and synthesize evidence on the incremental yield of prenatal exome sequencing (PES) in fetuses with an apparently normal phenotype with a normal G‐banded karyotype or chromosomal microarray (CMA).
A. Sotiriadis   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy