Laccase is one of the most important oxidoreductase with industrialization potential. However, due to the high cost and catalytic toxicity of laccase synthetic mediator, the laccase-mediator-system still cannot achieve industrialization. Therefore, searching for high efficient, environment-friendly, and cheap natural mediator from small molecule precursors or intermediates and degradation products of lignin has been considered as a hot research topic. Therefore, we introduce the type and catalytic mechanism of laccase mediator, the composition and separation of natural laccase mediator from water washed solution of steam exploded straw, black liquor and lignocelluloses degradation products during the fermentation of white-rot fungi. We also provide the theoretical and technical direction for exploring of high reactive of laccase natural mediators and achieving the oriented high-value utilization of lignocellulose degradation products.
Basidiomycota ; Fermentation ; Laccase ; chemistry ; Lignin ; chemistry ; Steam

Biomass is the most abundant organic macromolecules in nature, which is expected to achieve the brilliant of biorefinery equivalent to petroleum refining. However, it is considered as the future industry to human due to the complicated composition and transformation processes. The traditional lignocellulose bio-refining thoughts ignored the functional requirements of products, but spent a lot of energies to destruct macromolecule into small molecules, and then converted the small molecules into different products, which was high energy consumption and low atom economy. How to realize the biorefinery of lignocellulose is the key point and difficulty to achieve the biomass industry. An ideal biorefinery of lignocellulose should as far as possibly to obtain the maximum yield of each component, to maintain the integrity of the molecule, to optimize the utilization of raw materials and finally to realize the maximum value. Therefore, it requires the raw materials refining of lignocellosic biomass should be based on the relationship of structure, process transformation and related product characteristics. This special issue reports the latest advances in the fields of raw material refinery, refining technologies, conversion technologies of component.
Biomass ; Biotransformation ; Lignin ; chemistry

Objective To observe the clinical curative effect of skin-region drainage therapy combined with Sanpian Decoction in treating migraine.Methods A total of 90 cases of migraine patients were randomly divided into combination group and acupuncture group,45 cases in each group.The combination group was treated with skinregion drainage therapy combined with oral use of Sanpian Decoction,and the acupuncture group was treated with conventional acupuncture therapy.Seven days constituted one treatment course,and the clinical efficacy of the two groups was evaluated after 3 courses of treatment.Results (1) The total effective rate of the combination group and acupuncture group was 95.6％ and 82.2％ respectively,and there were significant differences between the two groups (P ＜ 0.05).(2) After treatment and 3 months after treatment suspension,the pain scores of the two groups were significantly decreased(P ＜ 0.01 compared with those before treatment),and the pain scores of the combination group were lower than those of the acupuncture group (P ＜ 0.01).Conclusion The skin-region drainage therapy combined with Sanpian Decoction exerts certain effect in treating migraine.

Objective To observe the effects of auditory integration training on language development delay in mental retardation children.Methods 40 cases were devided into observation group (n=20) and control group (n=20). All the children accepted speech training,while the observation group accepted auditory integration training in addition. They were assessed with the development quotient (DQ) of adaptability and language of Gesell developmental schedules before and 6 months after treatment. Results DQ of adaptability and language improved after treatment in both groups (P<0.05), and improved more in the observation group than in the control group (P<0.05). Conclusion Auditory integration training may further improve the language development in mental retardation children.

OBJECTIVE: To investigate the regulating pattern of kidney-tonifying recipes and spleen-invigorating recipe on the expression of T lymphocyte apoptosis signaling-related genes in corticosterone-treated rats. METHODS: We analyzed the activation-induced T lymphocyte apoptpsis rate through TUNEL-labelled flow-cytometry assay, quantified the mRNA expression level of T cell apoptosis-regulating genes by using the fluoresecence real-time PCR, analyzed the activity of caspase-8 and caspase-3 by colorimetric assay. RESULTS: (1) T lymphocyte apoptosis rate of corticosterone-treated rats was higher than that of the normal control rats; T lymphocyte apoptosis rates of Youguiyin treated rats and Bushen Yishou Capsule treated rats were lower than that of the corticosterone-treated group; T lymphocyte apoptosis rate of Sijunzi Decoction treated rats displayed no significance compared with that of the corticosterone-treated group. (2) Pro-apoptotic genes such as Fas, FasL, TNFR1, and Bax displayed increased expression level in corticosterone-treated group compared with normal control group. Two kidney-tonifying recipes down-regruated the expression level of FasL and TNFR1, at the same time, both recipes up-regulated the expression level of Bcl-2. The spleen-invigorating recipe had up-regulating effect on the expression level of Bcl-2. And all these results had statistical significance. (3) The activities of caspase-8 and caspase-3 were increased in corticosterone-treated rats compared with normal control; both kidney-tonifying recipes had significant effect on decreasing the activities of these two apoptosis executioners. CONCLUSION: The excessive apoptosis of T cell in corticosterone-treated rats could be effectively modulated with two kidney-tonifying recipes. Down-regulating the expression of FasL and TNFR1 and up-regulating the expression of Bcl-2 as well as decreasing the activities of caspase-8 and caspase-3 may be the unique regulating pattern of tonifying-kidney method with respect to T cell apoptosis related genes in corticosterone-treated rats.

Objective To propose a grasp torque control based on experimental learning and haptic feedback to facilitate the manipulator in dexterous manipulation.Methods An experience database was built firstly,and then the object was recognized by tactile feedback in the grasp task.If the object had been experitentially grasped,the torque was output based on the database.In case a new object was grasped,the optimal output torque was calculated by iterative learning.Results The experiment showed that the robot hand could find the experiential output torque quickly when encountering the object in database and calculate the torque by iterative learning to achieve grasp task.Conclusion The experiential database grows up when the robot hand learns more and more experience.It can fast output torque like human in the grasp task.

Objective To realize SLAM and path planning of mobile robot to solve the problem of real-time data association in the process of moving and to update the computational complexity of the state covariance matrix.Methods The mathematical model of SLAM was built,and FastSlam algorithm based on particle filter,A* and dynamic window approach (DWA) were used to prepare gmapping function package in the ROS framework.Results The motion simulation,path planning and dynamic obstacle avoidance of mobile robot in the ROS framework were realized.Conclusion By using ROS platform,mobile robots can execute path planning efficiently while completing self-localization and map building.

0.999 0, and RSDs were not more than 3.26%. The recovery rates were 94.12%-104.30% .The lowest detected concentration was 1.43 mg/L. There was no significant difference between the results of this method and Na2EDTA titration. Conclusion The method was rapid, accurate and highly sensitive.

Objective To discuss the clinical efficacy of point-injection with nerve growth factor (NGF) in treatment of infantile cerebral palsy.Methods According to the time order,50 cases with cerebral palsy were randomly divided into the treatment group(30 cases) and the control group (20 cases).Both groups were given the conventional treatment of Bobath mainly exercise therapy,homework therapy and the language therapy.In addition,the treatment group was given the treatment of point-injection with NGF.Gesell scale was used to evaluate all the patients before and after treatment.Results After treatment,the Gesell evaluation of the treatment group was higher than control group,and the difference was statistically significant (t =-2.096,-2.187,-2.048,-2.053,-2.225,all P ＜0.05).Conclusion On the basis of rehabilitation training,point-injection with NGF could improve intelligence,motor function and language in children with cerebral palsy,and the efficacy was obvious.

Objective To evaluate the clinical efficacy of thermo-chemotherapy and thermo-lipiodol embolization intreatment of primary hepatocellular carcinoma(PHC).Methods One hundred and sixteen cases of PHC were divided into three groups.Group A(38 cases)was treated with normal temperature chemotherapy and normal temperature lipiodol,Group B(40 cases)with thermo-chemotherapy and normal temperature lipiodol and group C(38 cases)with thermo-chemotherapy and thermo-lipiodol.Group B and group C were called the thermotherapy group.Results In the thermotherapy groups,the rates of tumor size reduction were significantly greater than those in the normal group.There were no significant different in the hepatic function tests among the three groups.The 6-,12-,18-,and 24-month survival rates of the normal group and thermotherapy groups were 97%,58%,39% and 18%,versus 99%,79%,57% and 36%,respectively.No significant differences were found in the rates of reduction of tumor size and survival rates between group B and group C.Conclusion Thermo-chemotherapy and thermo-embolization possess significant effect on PHC but without conspicuous damage to liver function.