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780.234  Articles
1 of 78.024 pages  |  10  records  |  more records»
Water and energy processes in frozen soils are important for better understanding hydrologic processes and water resources management in cold regions. To investigate the water and energy balance in seasonally frozen soils, CoupModel combined with the gene... see more

Performance analysis is an important way for hospitals to achieve higher efficiency and effectiveness in providing services to their customers. The performance of the healthcare system can be measured by many indicators, but it is difficult to improve the... see more

Recently, a variety of chaos-based image encryption algorithms adopting the traditional permutation-diffusion structure have been suggested. Most of these algorithms cannot resist the powerful chosen-plaintext attack and chosen-ciphertext attack efficient... see more

It is significant to study the variations in the stability coefficients of hydrodynamic pressure landslides with different permeability coefficients affected by reservoir water level fluctuations and rainstorms. The Sifangbei landslide in Three Gorges Res... see more

Objective: To analyze changes in retrobulbar blood flow in patients with pathological myopia using color doppler ultrasound (CDU), and to explore the relationship of these changes with the characteristic changes resulting from myopia.Methods: One hundred ... see more

Objective: To investigate the association between gestational blood lipids and thyroid stimulating hormone (TSH) levels and pregnancy outcomes of patients with subclinical hypothyroidism (SCH).Methods: In this retrospective observational study, we analyze... see more

Objective: To investigate the effect of storage duration of suspended red blood cells (SRBC) before intraoperative infusion on coagulation indexes, routine blood examination and immune function in patients with gastrointestinal (GI) tumors.Methods: We div... see more

Objectives: To compare the accuracy of three-dimensional transvaginal ultrasound and magnetic resonance imaging in the diagnosis of scar pregnancy.Methods: The records of 54 patients with scar pregnancy, who underwent three-dimensional transvaginal ultras... see more

Esse estudo objetiva testar a existência de raiz quase unitária e persistência local em diversas variáveis centrais de modelos econômicos (mercado de produto, CCAPM e derivação da fórmula de opção de compra de Black-Scholes). Argumenta-se que a rejeição d... see more

1 of 78.024 pages  |  10  records  |  more records»