A single center experience of combined liver and kidney transplantation

Objective To summarize the experience of treating the end stage of liver disease complicated with renal failure using combined liver - kidney transplantation. Methods The clinical data of 28 cases receiving combined liver - kidney transplantation were retrospectively ana-

Extraction of Flavonoids from Leaves of Coix lacryma-jobi L.

[Objectives] To extract the flavonoids from leaves of Coix lacryma-jobi L. [Methods] Ethanol extraction method was adopted,spectrophotometry was used,and single factor experiment and orthogonal experiment were carried out to study the effects of ethanol percentage,extraction temperature,solid-to-liquid ratio and extraction time on the extraction of total flavonoids from leaves of C. lacryma-jobi L.[Results] The order of 4 factors influencing the extraction of flavonoids from leaves of C. lacryma-jobi L. was: solid-to-liquid ratio > extraction time > ethanol percentage > extraction temperature. When the extraction temperature was 70℃,the extraction time was 1. 5 h and the solid-liquid ratio was 1: 10,the ethanol percentage was 60%,the extraction effect was the best,extraction of flavonoids was 0. 107 5 mg/m L.[Conclusions] This study is expected to provide a theoretical basis for further development and utilization of C. lacryma-jobi L.

Research and Optimization of Foshou Yam and Honey Nutritional Can by Response Surface Methodology

[Objectives]This study was conducted to screen best process parameters for making Foshou yam and honey can.[Methods]The Foshou yam produced from Wuxue was used as a raw material to prepare Foshou yam and honey nutritional can by combining Foshou yam with honey through screening,pre-cooking,filling,exhausting,cooling and other technical processes.The optimum technology parameter of Foshou yam and honey nutritional can was studied through single factor tests and response surface optimization.[Results]The optimum technical parameters of Foshou yam and honey nutritional can were citric acid concentration 0.1%,amount of edible salt 0.1%,cooking time 14 min and honey concentration 26%.Under these conditions,the final sensory score was 90.20.The prepared can was not only rich in nutrition,but also had good flavor and taste.[Conclusions]This study provides reference for the development and utilization of Foshou yam and the research and development of functional food.

A Solution to a Single Molecular Experiment Problem

Recently Hari Shroff and his collaborators[Nano Letters 5(2005)]developed a nanoscopic force sensor,but the force which they measured in their single molecular experiment was much lower than the theoretical critical value.In order to fix this problem,we investigate the micromechanics of dsDNA based on the worm-like chain model and flexible hinge model by using Monte Carlo algorithm.The simulation results not only address Hari Shroff’s experiment difficulty reasonably,but also provide strong support for flexible hinge mechanism put forward recently by Yan and Marko[Phys.Rev.Lett.93(2004)].

Temperature dependence of circular DNA topological states and a solution to a single molecular experiment problem

Circular double stranded DNA has different topological states which are defined by their linking numbers. Equilibrium distribution of linking numbers can be obtained by closing

The Effect of Audio Visual Entrainment on Pre-Attentive Dysfunctional Processing to Stressful Events in Anxious Individuals

Experimental single case studies on automatic processing of emotion were carried on a sample of people with an anxiety disorder. Participants were required to take three Audio Visual Entrainment (AVE) sessions to test for anxiety reduction as proclaimed by some academic research. Explicit reports were measured as well as pre-attentive bias to stressing information by using affective priming studies before and after AVE intervention. Group analysis shows that indeed AVEs program applications do reduce anxiety producing significant changes over explicit reports on anxiety levels and automatic processing bias of emotion. However, case by case analysis of six anxious participants shows that even when all of the participants report emotional improvement after intervention, not all of them reduce or eliminate dysfunctional bias to stressing information. Rather, they show a variety of processing styles due to intervention and some of them show no change at all. Implications of this differential effect to clinical sets are discussed.

In-phase thermal–mechanical fatigue investigation on hollow single crystal turbine blades

Thermal-mechanical fatigue（TMF）is the primary cause of failure of nickel-based single crystal turbine blades.TMF experiments have been performed on the critical section which is subjected to the most serious damage and determined by numerical calculation combined with service failure experience.An experimental system including the loading,heating,air cooling,water cooling,and control subsystems,is constructed to satisfy the TMF experimental requirements.This experimental system can simulate the stress feld,temperature feld,air cooling process,and TMF spectrum on the critical section under service conditions in a laboratory environment.A metal loading device and a new induction coil are developed to achieve the required stress and temperature distributions on the critical section,respectively.TMF experimental results have indicated that cracks initiated at the trailing edge of the suction surface on the critical section.Based on these experiments,life prediction and failure analysis of hollow single crystal turbine blades can be investigated.

Fiber orientation effects on grinding characteristics and removal mechanism of 2.5D C_(f)/SiC composites

Carbon fiber reinforced silicon carbide(C_(f)/SiC)composites are widely used in aerospace for their excellent mechanical properties.However,the quality of the machined surface is poor and unpredictable due to the material heterogeneity induced by complex removal mechanism.To clarify the effects of fiber orientation on the grinding characteristics and removal mechanism,single grit scratch experiments under different fiber orientations are conducted and a three-phase numerical modelling method for 2.5D C_(f)/SiC composites is proposed.Three fiber cutting modes i.e.,transverse,normal and longitudinal,are defined by fiber orientation and three machining directions i.e.,MA(longitudinal and normal),MB(longitudinal and transverse)and MC(normal and transverse),are selected to investigate the effect of fiber orientation on grinding force and micro-morphology.Besides,a three-phase cutting model of 2.5D C_(f)/SiC composites considering the mechanical properties of the matrix,fiber and interface is developed.Corresponding simulations are performed to reveal the micro-mechanism of crack initiation and extension as well as the material removal mechanism under different fiber orientations.The results indicate that the scratching forces fluctuate periodically,and the order of mean forces is MA>MC>MB.Cracks tend to grow along the fiber axis,which results in the largest damage layer for transverse fibers and the smallest for longitudinal fibers.The removal modes of transverse fibers are worn,fracture and peel-off,in which normal fibers are pullout and outcrop and the longitudinal fibers are worn and push-off.Under the stable cutting condition,the change of contact area between fiber and grit leads to different removal modes of fiber in the same cutting mode,and the increase of contact area results in the aggravation of fiber fracture.