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  • Article
    Hao L, Qingdong S, Imin B, Kasim N.
    PLoS One. 2020;15(8):e0235469.
    Random sampling is an important approach to field vegetation surveys. However, sampling surveys in desert areas are difficult because determining an appropriate quadrat size that represent the sparse and unevenly distributed vegetation is challenging. In this study, we present a methodology for quadrat size optimization based on low-altitude high-precision unmanned aerial vehicle (UAV) images. Using the Daliyaboyi Oasis as our study area, we simulated random sampling and analyzed the frequency distribution and variation in the fractional vegetation cover (FVC) index of the samples. Our results show that quadrats of 50 m × 50 m size are the most representative for sampling surveys in this location. The method exploits UAV technology to rapidly acquire vegetation information and overcomes the shortcomings of traditional methods that rely on labor-intensive fieldwork to collect species-area relationship (SAR) data. Our method presents two major advantages: (1) speed and efficiency stemming from the application of UAV, which also effectively overcomes the difficulties posed in vegetation surveys by the challenging desert climate and terrain; (2) the large sample size enabled by the use of a sampling simulation. Our methodology is thus highly suitable for selecting the optimal quadrat size and making accurate estimates, and can improve the efficiency and accuracy of field vegetation sampling surveys.
    Digital Access Access Options
  • Book
    editor, Matthew T. Wallace, associate editor, Frank J. Frassica.
    Summary: "A quick-reference handbook with more than 100 figures, charts, and images, Handbook of Musculoskeletal Tumors provides a wide-ranging overview of musculoskeletal tumors for the practicing clinician. From a pathological fracture in the emergency department to a soft tissue tumor in the clinic, musculoskeletal tumors present in clinical practice yet receive minimal exposure in training. Edited by Drs. Matthew T. Wallace and Frank J. Frassica, Handbook of Musculoskeletal Tumors provides readers with concise recommendations for their encounters with diseases including: latent bone lesions and active and aggressive benign bone lesions, osteosarcoma, Ewing sarcoma, and primary lymphoma of bone; myeloma and metastatic bone disease, chondrosarcoma, osteochondroma, multiple hereditary exostoses, Ollier disease, and Mafucci syndrome; benign soft tissue tumors, including lipomatous tumors, nerve sheath tumors, and myxoid, fibrous, and vascular lesions; soft tissue sarcomas, including undifferentiated pleomorphic sarcoma, liposarcomas, synovial sarcoma, rhabdomyosarcoma, and epithelioid sarcoma. Anatomic-specific considerations, including intra-articular lesions and hand, foot, and spine tumors. Written for primary care providers, practicing orthopedists and surgeons, residents and students in training, physician assistants, and nurses and nurse practitioners, Handbook of Musculoskeletal Tumors is a practical guide to help practitioners recognize and diagnose suspicious lesions, order appropriate testing, and facilitate prompt referrals to trained musculoskeletal oncologists when appropriate for additional management"-- Provided by publisher.

    Contents:
    Clinical presentation of bone tumors
    Clinical presentation of soft-tissue tumors
    Musculoskeletal radiology and imaging of tumors
    Biopsy
    Tumor-mimicking lesions : tumor simulators
    Latent bone lesions in children
    Active and aggressive benign bone lesions in children and young adults
    Bone malignancies in children and young adults
    Myeloma and metastatic bone disease
    Bone sarcomas in adults, chondrosarcoma, and chondrogenic tumor syndromes
    Benign soft-tissue tumors
    Soft tissue sarcomas
    Intra-articular lesions
    Spine tumors
    Tumors of the hands and feet.
    Digital Access Ovid [2020]