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Copyright of Research & Exploration in Laboratory is the property of Research & Exploration in Laboratory and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The minimal correction subset (MCS) of a Boolean formula is a set of clauses. By removing the MCS from a given unsatisfiable formula, the new generated formula becomes satisfiable. For any clause in the MCS, keeping the clause in the given unsatisfiable formula results in a new unsatisfiable formula. Minimal unsatisfiable core, MaxSAT and maximal (minimal) partial assignment can be solved by solving the MCS and adjusting the set of constraints. The MCS can also be applied to practical problems such as fault localization, model checking and configuration optimization. We propose an MCS calculation algorithm based on unsatisfiable reasons returned from SAT solvers, and implement a corresponding tool named CUC. Comparing with the state-of-theart tool LBX, the CUC outperforms LBX. The CUC can solve 5% (65) more formulas on average, and it is 2.5 times faster than LBX. [ABSTRACT FROM AUTHOR]

Copyright of West China Journal of Stomatology is the property of Sichuan University, West China College of Stomatology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the effect of sub-acute exposure to benzene on hematopoietic system in rats and to explore its related mechanism. Methods Thirh male SD rats were raixlomly divided into the blank control group, solvent control group, low-dose benzene group, medium-dose benzene group and high-dose benzene group, with 6 rats in each group. Benzene exposure groups were given 200, 400 and 800 mg/kg benzene solution respectively according to the body mass, the blank control group was not treated, and the solvent control group was given equal volume of corn oil, once a day and for 28 days. Routine blood test was analyzed by automatic blood-counter system. We killed the rats, then calculated the coefficient of liver and spleen, and observed the pathological changes of the femur and the morphological changes of bone marrow and peripheral blood cells. DNA damage of bone marrow and peripheral blood cells were detected by single cell gel electrophoresis (SCGE), and we recorded the tail moment (TM) and Olive tail moment (OTM). Results The WBC of low-dose, medium-dose and high-dose benzene groups were lower than that of the blank control group and the solvent control group (P <0.05). The RBC-in the high-dose benzene group was lower than the other groups, and ihe hemoglobin (Hb) in the medium-dose and high-dose benzene groups was lower than that of the other groups (P < 0.05). There was no significant difference in PLT among these groups (all P > 0.05). There were no significant differences in liver and spleen coefficients among these groups (all P >0.05). In the blank control group and solvent control group, the morphological changes of the bone marrow and peripheral blood cells and the palhologie changes of the bone marrow were basically consistent. The pathological changes showed that in the three benzene groups, the area of hematopoietic tissue was decreased, there were more toxic particles and vacuoles in the bone marrow and peripheral blood cells, meanwhile, with the increased dose of benzene, the above changes were more significant. Compared with the blank control group and solvent control group, TM and OTM were increased in turn in the three benzene groups (P<0. 01). Conclusion Aub-acute ex­posure to benzene has a toxic effect on bone marrow of rats with a dose-dependent manner, which may be rated to DNA damage in peripheral blood and bone marrow cells. [ABSTRACT FROM AUTHOR]

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To produce silk fibroin/chitosan scaffolds (SFCSs) by freeze drying method so as to provide the theoretical foundation for subsequent experiments which aim to select appropriate scaffolds. Methods Silk was degummed, dissolved and purified to obtain appropriate concentration of silk fibroin solution, which was then mixed with chitosan solution by the ratio of 4∶6. The SFCSs were prepared by freeze drying method. The scaffolds' properties including pore diameter, porosity, fracture strength, water swelling rate, and degradation rate in vivo and in vitro were tested; the biodegradability was observed from the morphological perspective by HE staining and micro-CT. Results SFCSs' pore diameter was 100～120μm, fracture strength was (8.31±1.271)MPa, porosity was (84.32±5.14)%, water swelling rate was (137±7.15)%, and the degradation rate in vivo and in vitro did not differ at week 2 (P>0.05), but differed significantly at week 6 and week 10 (P<0.05). HE staining and micro-CT further proved its good biodegradability in vivo from the morphological perspective. Conclusion We made successful production of SFCS scaffolds, of which pore diameter, fracture strength, porosity, water swelling rate, and degradation rate in vivo and in vitro fully meet the requirement of spinal cord tissue engineering. It will provide a solid foundation for subsequent experiments that use tissue engineering technology to repair spinal cord injury. [ABSTRACT FROM AUTHOR]

Objective: To explore the influence of simvastatin plus low molecular heparin on D-dimer, N-terminal brain natriuretic peptide precursor (NT-pro BNP), left ventricular ejection fraction (LVEF), left ventricular end-diastolic diameter, serum c-reactive protein (CRP), plasma fibrinogen (FB), serum total cholesterol (TC), low density lipoprotein cholesterol (LDL-C) in patients with chronic heart failure (CHF). Methods: A total of 80 patients with CHF, who were treated in Dalian Center Hospital from April 2010 to July 2014,were selected and randomly divided into treatment group (n=40) and control group (n=40). The two groups were all treated with conventional therapy, based on which, the treatment group was added simvastatin plus low molecular heparin, the course of treatment was two months.The levels of D-dimer, NT-pro BNP, LVEF, left ventricular end-diastolic diameter, CRP, FB, TC and LDL-C in the two groups before and after treatment were compared. Results: Compared with before treatment, the levels of D-dimer, NT-pro BNP, LVEF, left ventricular end-diastolic diameter, CRP, FB, TC and LDL-C in the control group after treatment were not obviously improved, while the above indexes in the treatment group were improved significantly, the differences were statistically significant (P<0.05). Conclusion: Simvastatin plus low molecular heparin can effectively improve the relevant indexe of patients with CHF, which plays an important role in the clinical treatment and is worthy of clinical application. [ABSTRACT FROM AUTHOR]

Copyright of Practical Pharmacy & Clinical Remedies is the property of Editorial Department of Practical Pharmacy & Clinical Remedies and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)