Sherry L. Xie

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The paper deals with the existence and multiplicity of positive solutions for a system of higher-order singular nonlinear fractional differential equations with nonlocal boundary conditions. The main tool used in the proof is fixed point index theory in cone. Some limit type conditions for ensuring the existence of positive solutions are given.
This issue will focus on writing and publishing CGT. The numerous remodeled versions of GT have resulted in many misunderstandings of the classic methodology, most particularly, the misconception that GT is a qualitative research method. The resultant confusion of CGT with qualitative methods is a frequent frustration – and sometimes obstacle – for CGT(More)
From 1977 to 1994, 9 breast cancer were treated. All patients presented axillary node enlargement as first sign. Six patients were treated by radical or modified radical mastectomy and 3 by axillary node excision. All patients received postoperative adjuvant radiotherapy and chemotherapy. Among the 6 patients treated by radical or modified radical(More)
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