OBJECTIVE To evaluate the diagnosis and treatment for primary renal malignant fibrous histiocytoma, a rare tumor arising from the kidney.METHODS The clinical and pathological data from 4 cases of malignant fibrous his...OBJECTIVE To evaluate the diagnosis and treatment for primary renal malignant fibrous histiocytoma, a rare tumor arising from the kidney.METHODS The clinical and pathological data from 4 cases of malignant fibrous histiocytoma of the kidney detected in our hospital are described.One case of special interest involved a giant cell subtype, the first to be reported in the oncology literature. The clinicopathologic features and prognostic factors of this tumor were analysed and summarized after reviewing 55 documented cases in the English and Chinese literature.RESULTS A palpable mass (71.2%), emaciation (54.2%) and pain (54,2%) were common manifestations in renal MFH, Of all the cases, 51 were identified as a storiform-pleomorphic subtype by pathologists. Inconsideration of all the prognosis related factors, the residual tumor and high TNM stage predicted a shortened survival duration, but the symptom of a fever served as a better prognostic factor.CONCLUSION Malignant fibrous histiocytoma which arises from the kidney is a rare pathologic type, and possesses a high tendency towards local recurrence and distant metastasis. Despite the poor prognosis, early detection and radical surgery can prolong survival in selected cases.展开更多
Most of works on the time complexity analysis of evolutionary algorithms havealways focused on some artificial binary problems. The time complexity of the algorithms forcombinatorial optimisation has not been well und...Most of works on the time complexity analysis of evolutionary algorithms havealways focused on some artificial binary problems. The time complexity of the algorithms forcombinatorial optimisation has not been well understood. This paper considers the time complexity ofan evolutionary algorithm for a classical combinatorial optimisation problem, to find the maximumcardinality matching in a graph. It is shown that the evolutionary algorithm can produce a matchingwith nearly maximum cardinality in average polynomial time.展开更多
Pulsed laser photolysis/laser-induced fluores-cence 0LP-LIF) is utilized to measure rate constants for C2(a^3Пu) reactions with NO, N2O, O2, H2 and NH3. Multiphoton dissociation of C2C!4 at 266 nm is employed for the...Pulsed laser photolysis/laser-induced fluores-cence 0LP-LIF) is utilized to measure rate constants for C2(a^3Пu) reactions with NO, N2O, O2, H2 and NH3. Multiphoton dissociation of C2C!4 at 266 nm is employed for the generation of C2(a^3Пu) radicals. The C2(a^3Пu) concentration is monitored by the fluorescence of the (0, 0) band of the (d^3Пg←→a^3Пu) transition at 516.5 nm. C2(a^3Пu) removal rate constants for the reactions are determined as kNO = (5.46 × 0.10) × 10^-11- cm^3 molecule^-1 s^-1, kN2O = (1.63 × 0.20) × 10^-13 cm^3 molecule^-1 s^-1, kN2O = (1.58 × 0.16) × 10^-11 cm^3 molecule^-l s^-1, kO2 = (5.92 × 1.00) × 10^-14 cm^3 molecule^-1 s^-1, kH2 < 1.0× 10^-14 cm^3 molecule^-1 s^-1. Based on the data analysis and theoretical calculation, we suggest that the C2(a^3Пu) reactions with H2 and NH3 proceed via the hydrogen abstraction mechanism, barriers exist at the entrance channel of the reactions of C2(a^3Пu) with H2 and NH3.展开更多
文摘OBJECTIVE To evaluate the diagnosis and treatment for primary renal malignant fibrous histiocytoma, a rare tumor arising from the kidney.METHODS The clinical and pathological data from 4 cases of malignant fibrous histiocytoma of the kidney detected in our hospital are described.One case of special interest involved a giant cell subtype, the first to be reported in the oncology literature. The clinicopathologic features and prognostic factors of this tumor were analysed and summarized after reviewing 55 documented cases in the English and Chinese literature.RESULTS A palpable mass (71.2%), emaciation (54.2%) and pain (54,2%) were common manifestations in renal MFH, Of all the cases, 51 were identified as a storiform-pleomorphic subtype by pathologists. Inconsideration of all the prognosis related factors, the residual tumor and high TNM stage predicted a shortened survival duration, but the symptom of a fever served as a better prognostic factor.CONCLUSION Malignant fibrous histiocytoma which arises from the kidney is a rare pathologic type, and possesses a high tendency towards local recurrence and distant metastasis. Despite the poor prognosis, early detection and radical surgery can prolong survival in selected cases.
基金Engineering and Physical Sciences Research Council(GR/R52541/01)a，武汉大学校科研和教改项目
文摘Most of works on the time complexity analysis of evolutionary algorithms havealways focused on some artificial binary problems. The time complexity of the algorithms forcombinatorial optimisation has not been well understood. This paper considers the time complexity ofan evolutionary algorithm for a classical combinatorial optimisation problem, to find the maximumcardinality matching in a graph. It is shown that the evolutionary algorithm can produce a matchingwith nearly maximum cardinality in average polynomial time.
文摘Pulsed laser photolysis/laser-induced fluores-cence 0LP-LIF) is utilized to measure rate constants for C2(a^3Пu) reactions with NO, N2O, O2, H2 and NH3. Multiphoton dissociation of C2C!4 at 266 nm is employed for the generation of C2(a^3Пu) radicals. The C2(a^3Пu) concentration is monitored by the fluorescence of the (0, 0) band of the (d^3Пg←→a^3Пu) transition at 516.5 nm. C2(a^3Пu) removal rate constants for the reactions are determined as kNO = (5.46 × 0.10) × 10^-11- cm^3 molecule^-1 s^-1, kN2O = (1.63 × 0.20) × 10^-13 cm^3 molecule^-1 s^-1, kN2O = (1.58 × 0.16) × 10^-11 cm^3 molecule^-l s^-1, kO2 = (5.92 × 1.00) × 10^-14 cm^3 molecule^-1 s^-1, kH2 < 1.0× 10^-14 cm^3 molecule^-1 s^-1. Based on the data analysis and theoretical calculation, we suggest that the C2(a^3Пu) reactions with H2 and NH3 proceed via the hydrogen abstraction mechanism, barriers exist at the entrance channel of the reactions of C2(a^3Пu) with H2 and NH3.
