Results 61 to 70 of about 5,345 (110)

基于SfM-MVS的作物覆盖坡面微地形特征提取与分析

Shuitu Baochi Xuebao
目的为探究作物覆盖坡面地表微地形特征提取的可能性，实现作物覆盖条件下微地形三维建模与动态监测。方法采用SfM-MVS（structure from motion with multi-view stereo）方法，以玉米覆盖坡面为研究对象，裸坡作为对照，开展以裸坡及模拟微地形的标志物为基准，玉米覆盖条件下地表微地形构建提取和精度评估研究。结果1）玉米覆盖坡面控制点误差<0.002 m，稀疏点云与密集点云数量分别为裸坡的2.1、2.6倍。2）基于C2C（Cloud to Cloud）的结果表明 ...
姜静海, 郑子成, 何淑勤
doaj   +2 more sources

[A clinical study on the centralized occlusal scheme for implant-supported overdentures in edentulous patients]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Diao C, Wang S, Li M, Pan S, Liu Y.
europepmc   +1 more source

RCTUnet: a deep learning model for crop-residue-soil image segmentation and crop residue cover extraction. [PDF]

J Zhejiang Univ Sci B
Li T, Liu Y, Feng H, Shu M, Yang H, Fu Y, Xu X, Lin Y, Qiao H, Guo W, Ma X, Shi L, Yue J.   +12 more
europepmc   +1 more source

基于Meta分析的黄土高原苹果园土壤改良措施效果评价

Shuitu Baochi Xuebao
[目的] 黄土高原苹果园直接面临土壤酸化、结构恶化、肥力退化及保水能力差等问题,有效的土壤改良技术对改善黄土高原苹果园土壤质量、促进果园的健康和可持续发展至关重要。[方法] 基于黄土高原苹果园土壤改良的75篇文献1 302对田间试验数据,采用Meta分析和主成分分析(PCA)定量评估不同改良方式(覆盖、施肥和土壤改良剂)对土壤质量的改善效果。[结果] 生草覆盖、地膜覆盖、秸秆覆盖和砂砾覆盖降低土壤质量密度效果良好,降低幅度分别为6.63%,5.96%,6.04%,6.40%,其中 ...
段顺霞, 刘嘉元, 赵宏祥, 李秧秧   +3 more
doaj  

Trend analysis and modelling of universal health coverage, Ethiopia. [PDF]

Bull World Health Organ
Assefa Y, Gelaw YA, Endalamaw A, Wolka E, Zewdie A.   +4 more
europepmc   +1 more source

[Estimation of acetabular cup prosthesis coverage rate in total hip arthroplasty based on X-ray films]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li D, Zhang Y, Chen Z, Chang W, Ding H.
europepmc   +1 more source

[Comparison of the population covered by the 2024 version of the WHO's hepatitis B prevention and treatment guidelines and the Chinese antiviral treatment guidelines]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Wang BQ, Shan S, Kong YY, Wu XN, Zhou JL, Sun YM, Chen SY, Wang H, Xu XQ, Xia S, Jia JD, You H, China Clinical Registry of Hepatitis B (CR-HepB) Group.   +12 more
europepmc   +1 more source

[Application of antibiotic bone cement-coated plates internal fixation for primary treating Gustilo type ⅢB tibiofibular open fracture]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Kang Y, Wu Y, Rui Y, Zhang Q, Ma Y, Jia X, Zhang M, Zhou M, Lin F.   +8 more
europepmc   +1 more source

Testing indoor residual spraying coverage targets for malaria control, Bioko, Equatorial Guinea. [PDF]

Bull World Health Organ
García GA, Hergott DEB, Galick DS, Donfack OT, Motobe Vaz L, Nze Nchama LO, Mba Eyono JN, Nguema Avue RM, Riloha Rivas M, Iyanga MM, Ebang Bikie FE, Ondo Mifumu TA, Phiri WP, von Fricken ME, Reiner RC, Smith DL, Guerra CA.   +16 more
europepmc   +1 more source