By introducing a water depth connecting formula, the hydraulic equations in the dividing channel system were coupled and the relation of discharge distribution between the branches of the dividing channels can be yiel...By introducing a water depth connecting formula, the hydraulic equations in the dividing channel system were coupled and the relation of discharge distribution between the branches of the dividing channels can be yielded. In this manner, a numerical model for the confluent channels was established to study the variation of backwater effects with the parameters in the channel junction. The meeting of flood peaks in the mainstream and tributary can be analyzed with this model.The flood peak meeting is found to be a major factor for the extremely high water level in the mainstream during the 1998 Yangtze River flood. Subsequently the variations of discharge distribution and water level with channel parameters between each branch in this system were studied as well. As a result, flood evolution caused by Jingjiang River shortcut and sediment deposition in the entrance of dividing channels of the Yangtze River may be qualitatively elucidated.It is suggested to be an effective measure for flood mitigation to enhance regulation capability of reservoirs available upstream of the tributaries and harness branch entrance channels.展开更多
The principle aim of this research article is to investigate the properties of k-fractional integration introduced and defined by Mubeen and Habibullah [1],and secondly to solve the integral equation of the form , for...The principle aim of this research article is to investigate the properties of k-fractional integration introduced and defined by Mubeen and Habibullah [1],and secondly to solve the integral equation of the form , for?k > 0, β > 0, y > 0, 0 is the confluent k-hypergeometric functions, by using k-fractional integration.展开更多
Background: Prurigo Pigmentosa (PP) is a rare inflammatory dermatitis first discovered in 1971. Characterized by a sudden eruption of pruritic reticulated, pink-brown papules coalescing into plaques distributed symmet...Background: Prurigo Pigmentosa (PP) is a rare inflammatory dermatitis first discovered in 1971. Characterized by a sudden eruption of pruritic reticulated, pink-brown papules coalescing into plaques distributed symmetrically over shoulders, neck, chest, and back. Various triggers have been identified, including the ketogenic diet. Clinicopathological presentation looks similar to confluent and reticulated papillomatosis (CARP) which is a rare dermatosis of unknown etiology characterized by hyperkeratotic pigmented papules & peripheral reticulation involving seborrheic areas. Aim: To document a new case presentation of PP caused by a low-carbohydrate restricted diet and discuss the comparison with CARP clinically, pathologically, and treatment modalities. Case report: A 15-year-old childhood male developed PP 3 weeks after self-initiating a low carbohydrate-restricted ketogenic diet for weight management. Clinically and histopathologically the lesion looks similar to CARP, treated successfully with re-introduction of high carbohydrates in his food, a short course of systemic steroids in combination with oral doxycycline capsules for the one-month duration. Conclusion: PP & CARP have been considered a spectrum of one disease, and PP is a pruritic variant from CARP caused by a low carbohydrate-restricted diet.展开更多
目的:加深对融合性网状乳头瘤病(confluent and reticulated papillomatosis,CRP)临床及组织病理特点的认识。方法:回顾性分析北京协和医院于1999—2009年间诊治的20例CRP患者的临床表现、组织病理特点和治疗反应。结果:20例患者平均发...目的:加深对融合性网状乳头瘤病(confluent and reticulated papillomatosis,CRP)临床及组织病理特点的认识。方法:回顾性分析北京协和医院于1999—2009年间诊治的20例CRP患者的临床表现、组织病理特点和治疗反应。结果:20例患者平均发病年龄为17.85岁(11～28岁),平均病程22.45个月(1个月～8年),男女比例相等。典型皮损表现为褐色丘疹、斑疹或斑片,可融合形成网状,主要累及躯干,也可见于肘部、肘窝和腘窝等少见部位。组织病理检查:17例表现为表皮角化过度,棘层肥厚及乳头瘤样增生;另3例表现为表皮角化过度及不同程度的棘层肥厚。10例患者予米诺环素治疗,其中8例皮损痊愈(2例停药后皮损复发),2例无效。结论:CRP多发生于青春期,发病无性别差异。皮损可累及少见部位,组织病理有时不典型。米诺环素治疗该病效果好。展开更多
文摘By introducing a water depth connecting formula, the hydraulic equations in the dividing channel system were coupled and the relation of discharge distribution between the branches of the dividing channels can be yielded. In this manner, a numerical model for the confluent channels was established to study the variation of backwater effects with the parameters in the channel junction. The meeting of flood peaks in the mainstream and tributary can be analyzed with this model.The flood peak meeting is found to be a major factor for the extremely high water level in the mainstream during the 1998 Yangtze River flood. Subsequently the variations of discharge distribution and water level with channel parameters between each branch in this system were studied as well. As a result, flood evolution caused by Jingjiang River shortcut and sediment deposition in the entrance of dividing channels of the Yangtze River may be qualitatively elucidated.It is suggested to be an effective measure for flood mitigation to enhance regulation capability of reservoirs available upstream of the tributaries and harness branch entrance channels.
文摘The principle aim of this research article is to investigate the properties of k-fractional integration introduced and defined by Mubeen and Habibullah [1],and secondly to solve the integral equation of the form , for?k > 0, β > 0, y > 0, 0 is the confluent k-hypergeometric functions, by using k-fractional integration.
文摘Background: Prurigo Pigmentosa (PP) is a rare inflammatory dermatitis first discovered in 1971. Characterized by a sudden eruption of pruritic reticulated, pink-brown papules coalescing into plaques distributed symmetrically over shoulders, neck, chest, and back. Various triggers have been identified, including the ketogenic diet. Clinicopathological presentation looks similar to confluent and reticulated papillomatosis (CARP) which is a rare dermatosis of unknown etiology characterized by hyperkeratotic pigmented papules & peripheral reticulation involving seborrheic areas. Aim: To document a new case presentation of PP caused by a low-carbohydrate restricted diet and discuss the comparison with CARP clinically, pathologically, and treatment modalities. Case report: A 15-year-old childhood male developed PP 3 weeks after self-initiating a low carbohydrate-restricted ketogenic diet for weight management. Clinically and histopathologically the lesion looks similar to CARP, treated successfully with re-introduction of high carbohydrates in his food, a short course of systemic steroids in combination with oral doxycycline capsules for the one-month duration. Conclusion: PP & CARP have been considered a spectrum of one disease, and PP is a pruritic variant from CARP caused by a low carbohydrate-restricted diet.
文摘目的:加深对融合性网状乳头瘤病(confluent and reticulated papillomatosis,CRP)临床及组织病理特点的认识。方法:回顾性分析北京协和医院于1999—2009年间诊治的20例CRP患者的临床表现、组织病理特点和治疗反应。结果:20例患者平均发病年龄为17.85岁(11～28岁),平均病程22.45个月(1个月～8年),男女比例相等。典型皮损表现为褐色丘疹、斑疹或斑片,可融合形成网状,主要累及躯干,也可见于肘部、肘窝和腘窝等少见部位。组织病理检查:17例表现为表皮角化过度,棘层肥厚及乳头瘤样增生;另3例表现为表皮角化过度及不同程度的棘层肥厚。10例患者予米诺环素治疗,其中8例皮损痊愈(2例停药后皮损复发),2例无效。结论:CRP多发生于青春期,发病无性别差异。皮损可累及少见部位,组织病理有时不典型。米诺环素治疗该病效果好。
