Showing 8,281 - 8,300 results of 9,156 for search 'issues samples', query time: 0.15s Refine Results
  1. 8281

    Red Supergiant Problem Viewed from the Nebular Phase Spectroscopy of Type II Supernovae by Qiliang Fang, Takashi J. Moriya, Keiichi Maeda

    Published 2025-01-01
    “…Finally, we discuss several scenarios to account for this issue should it be confirmed as a true manifestation of stellar physics.…”
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    Article
  2. 8282

    Prevalence of Primary Dysmenorrhea and Its Associated Risk Factors among Adolescent Girls in Selected Schools of Lusaka District, Zambia by Nachizya Edith Namukanga, Joseph Mumba Zulu, Margarate N Munakampe, Dennis M Ngosa, Samson Shumba, Choolwe Jacobs

    Published 2024-01-01
    “…Background: Dysmenorrhea is a common gynecological issue among young females. However, no studies in Zambia have examined the prevalence and associated factors of primary dysmenorrhea among adolescent girls. …”
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    Article
  3. 8283

    Genetically proxied gut microbiota and cancer risk: a scoping review of Mendelian randomization studies by Yating Cui, Jianguo Xu, Qingyong Zheng, Junfei Wang, Caihua Xu, Mingyue Zhang, Jiang Li, Jinhui Tian

    Published 2025-08-01
    “…Abstract Background Cancer is a critical global health issue, and gut microbiota is considered a potential factor in the development of cancers. …”
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    Article
  4. 8284

    Follow-up outcomes of asymptomatic brucellosis: a systematic review and meta-analysis by Fande Li, Lanping Du, Hua Zhen, Mujinyan Li, Shuqi An, Wenqi Fan, Yuke Yan, Meifang Zhao, Xin Han, Zhuo Li, Huixin Yang, Cui Zhang, Chao Guo, Qing Zhen

    Published 2023-12-01
    “…Additionally, future prospective, long-term, and large-sample follow-up studies are essential.…”
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    Article
  5. 8285

    Improving chlorophyll-a estimation using Sentinel-2 data: a comparative analysis of augmented datasets by Jinmyeong Lee, Do Hyuck Kwon, Heewon Jeong, Gibeom Nam, Euiho Hwang, Jin Hwi Kim, Kyung Hwa Cho, Hyo Gyeom Kim

    Published 2025-12-01
    “…Models trained on the augmented datasets, GEND and ND-SMOGN, successfully addressed this underestimation issue for the sample with the highest Chl-a concentration. …”
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    Article
  6. 8286

    Burnout Among Labor and Birth Providers in Northern Tanzania: A Mixed‐Methods Study by Virginie Marchand, Melissa H. Watt, Linda M. Minja, Mariam L. Barabara, Olivia R. Hanson, Janeth Mlay, Maya J. Stephens, Blandina T. Mmbaga, Susanna R. Cohen

    Published 2024-12-01
    “…A structured assessment of burnout was collected at four timepoints from a sample of 60 L&D providers in 6 clinics. The same providers participated in an interactive group activity from which we drew observational prevalence data. …”
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    Article
  7. 8287

    Trends in vascular access among patients on hemodialysis; a nationwide survey from Egypt by Eman Nagy, Karem Salem, Mostafa Abdelsalam, Rasha Shemies, Nehal Elshabrawy, Ahmed M. Abd Elwahab, Alaa Sabry, Alaa A. Elsawi, Ahmed Albeyaly, Hamed Eleraky, Hala Mahmoud, Mohamed Elsayed, Nayel Zaki, Ahmed Noureldin, Ahmed Megahed, Hassan Foula, Basma Sultan, Mohamed Hamed Brawy, Walaa H. Ibrahim, Alshaimaa S. Mubarak, Bishoy Tanagho, Aber-Halim Attallah, Mohamed Ellawag, Hazem Abo Shousha, Emad Samaan

    Published 2025-07-01
    “…Abstract Problem statement Vascular Access (VA) in hemodialysis (HD) patients is vital for treatment efficiency and is influenced by Egypt’s healthcare system and socioeconomic factors. It is a complex issue, shaped by both challenges and opportunities within the nation’s healthcare infrastructure. …”
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    Article
  8. 8288

    Variants of the Sliding Mode Control in Presence of External Disturbance for Quadrotor by Irfan Ahmad, Muwaida Liaquat, Fahad Mumtaz Malik, Hameed Ullah, Usman Ali

    Published 2020-01-01
    “…In this paper, an Improved Integral Power Rate Exponential Reaching Law (IIPRERL) Sliding Mode Control strategy has been presented to cater to the chattering problem and stability issue with the focusing on to achieve minimum steady-state errors in the presence of matched disturbances for a quadrotor. …”
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    Article
  9. 8289

    Enhancing voice spoofing detection in noisy environments using frequency feature masking augmentation by Soyul Han, Jaejin Seo, Sunmook Choi, Taein Kang, Sanghyeok Chung, Seungeun Lee, Seoyoung Park, Seungsang Oh, Il-Youp Kwak

    Published 2025-03-01
    “…Our exploratory data analysis revealed that for a given speech sample, noisy signals tend to occur within similar frequency bands. …”
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    Article
  10. 8290

    RETRACTED: Green Investment for Sustainable Business Development: The Influence of Policy Instruments on Solar Technology Adoption by Shahid Ali, Qingyou Yan, Qingyou Yan, Muhammad Irfan, Muhammad Irfan, Muhammad Irfan, Waqar Ameer, Desire Wade Atchike, Ángel Acevedo-Duque

    Published 2022-04-01
    “…Renewable energy policies have become the key issue in both developing and developed countries; there is a need to focus on energy-related policies by regulatory authorities of these countries. …”
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    Article
  11. 8291

    Demand side management with wireless channel impact in IoT-enabled smart grid system by Md. Farhad Hossain, Kumudu S. Munasinghe, Nishant Jagannath, Khandakar Tanvir Ahmed, Md. Nabid Hasan, Ibrahim Elgendi, Abbas Jamalipour

    Published 2025-04-01
    “…Demand Side Management (DSM) is a vital issue in smart grids, given the time-varying user demand for electricity and power generation cost over a day. …”
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    Article
  12. 8292

    Influence of socio-demographics and societal values on the trade of economically significant forest tree resources as wood lumber by Angela N. Amujiri, Dilibe C. Urama, Chibugo C. Amadi, Idaraobong Umoren, Emmanuel E. Osayi, Chinenye B. Ozokolie, Felix A. Andong

    Published 2025-07-01
    “…We investigated influence of socio-demographics and societal values on the trade of economically significant forest tree resources as wood lumber in the urban area of Nsukka, Enugu State, Nigeria. A probability sampling approach which involved issuing 400 questionnaires was adopted to examine the most common forest trees sold as timber; demographic factors influencing the wood retailing; as well as the societal factors influencing the wood value chain and number of retailers entering the business over a period of 10 months. …”
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  13. 8293

    Sexual health in female and male cancer survivors – compared with age-matched cancer-free controls in Norway by Emilie Åsberg, Guro F. Giskeødegård, Jarle Karlsen, Cecile E. Kiserud, Guro Aune, Marianne Nilsen, Randi J. Reidunsdatter

    Published 2025-03-01
    “…It is imperative to address this overlooked health issue in the follow-up programs for cancer survivors. …”
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  14. 8294

    Differences in symptom clusters based on multidimensional symptom experience and symptom burden in stroke patients by Siyu Zhou, Dan Yin, Huijuan He, Mengying Li, Yuan Zhang, Jie Xiao, Xiangrong Wang, Lin Li, Dan Yang

    Published 2025-04-01
    “…Data were collected from 656 stroke patients via a convenience sampling method at a tertiary-level hospital in Wuhan, China, between August 2023 and March 2024. …”
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  15. 8295

    Complete plastomes serve as desirable molecular makers for precise identification of Asparagus cochinchinensis (Asparagaceae) and nine other congeneric species frequently utilized... by Xiaorong Guo, Pingxuan Xie, Guangfei Zhang, Tinglu Wang, Jieyan Li, Xinqi Zhang, Weigeng Su, Yunheng Ji

    Published 2025-03-01
    “…Results Through comprehensive phylogenetic and genetic distance analyses based on extensive sampling at both inter- and intra-specific levels, the efficacy of the two candidate molecular markers was assessed by investigating whether their inter-specific genetic divergences align with the taxonomically delineated species boundaries. …”
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  16. 8296
  17. 8297

    Unravelling Bias: A Sardinian perspective on taxonomic, spatial, and temporal biases in vascular plant biodiversity data from GBIF by Raimondo Melis, Marco Malavasi, Manuele Bazzichetto, Maria Carmela Caria, Giovanni Rivieccio, Agnese Denaro, Elisa Marchetto, Michela Perrone, Martina Livornese, Duccio Rocchini, Simonetta Bagella

    Published 2025-12-01
    “…Biodiversity data are expanding rapidly, yet often exhibit significant biases that are rarely mapped or systematically analyzed to understand underlying drivers. This issue is particularly pressing in the era of citizen science, which now contributes a substantial share of biodiversity records. …”
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    Article
  18. 8298

    A 2.5-D Substation Terrestrial Laser Scanning Network Planning Algorithm Based on Ray Weighting by Huachen Zhao, Cheng Wang, Pu Wang, Sheng Nie, Shaobo Xia, Meng Du

    Published 2025-01-01
    “…First, we sample the substation scene model via triangular mesh. …”
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  19. 8299

    Detection of Parabolic Antennas in Satellite Inverse Synthetic Aperture Radar Images Using Component Prior and Improved-YOLOv8 Network in Terahertz Regime by Liuxiao Yang, Hongqiang Wang, Yang Zeng, Wei Liu, Ruijun Wang, Bin Deng

    Published 2025-02-01
    “…In order to tackle the challenges associated with component identification in satellite ISAR imagery, this study employs the Improved-YOLOv8 model, which was developed by incorporating the YOLOv8 algorithm, an adaptive detection head known as the Dynamic head (Dyhead) that utilizes an attention mechanism, and a regression box loss function called Wise Intersection over Union (WIoU), which addresses the issue of varying sample difficulty. After being trained on the simulated dataset, the model demonstrated a considerable enhancement in detection accuracy over the five base models, reaching an mAP50 of 0.935 and an mAP50-95 of 0.520. …”
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  20. 8300

    Cryptic Kultarr: Integrative Taxonomy Reveals Unrecognized Species of Carnivorous Marsupial (Dasyuridae: Antechinomys) in Arid Australia by Cameron S. Dodd, Renee A. Catullo, Kenny J. Travouillon, Andrew M. Baker, Michael Westerman, Linette S. Umbrello

    Published 2025-07-01
    “…This research highlights the importance of integrating morphological and genetic data in small mammal taxonomy and emphasizes the need for comprehensive geographic sampling within widespread species complexes.…”
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    Article