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Wu, Q.,Chi, K.,Wu, Y.,Lee, S. BUTTERWORTH - HEINEMANN 2014 MATERIALS AND DESIGN Vol.60 No.-
Basalt fiber (BF) filled high density polyethylene (HDPE) and co-extruded wood plastic composites (WPCs) with BF/HDPE composite shell were successfully prepared and their mechanical, morphological and thermal properties characterized. The BFs had an average diameter of 7μm with an organic surfactant surface coating, which was thermally decomposed at about 210<SUP>o</SUP>C. Incorporating BFs into HDPE matrix substantially enhanced flexural, tensile and dynamic modulus without causing a noticeable decrease in the tensile and impact strength of the composites. Micromechanical modeling of tensile properties for the BF/HDPE composites showed a good fit of the selected models to the experimental data. Compared to neat HDPE, BF/HDPE composites had reduced linear coefficient of thermal expansion (LCTE) values. The use of the pure HDPE and BF/HDPE layers over a WPC core greatly improved impact strength of core-shell structured composites. However, the relatively less-stiff HDPE shell with large LCTE values decreased the overall composite modulus and thermal stability. Both flexural and thermal expansion properties were enhanced with BF reinforced HDPE shells, leading to well-balanced properties of core-shell structured material. Cone calorimetry analysis indicated that flammability performance of core-shell structured composites was improved as the BF content increased in the shell layer.
Photocatalytic and Hydrophilic Properties of TiO₂/ Fe₂O₃ Composite Films
Q. J. Liu,Q. L,X. H. Wu,G. Q. Zhang,Z. Q. Gao,G. X. Chen 한국진공학회(ASCT) 2002 Journal of Korean Vacuum Science & Technology Vol.6 No.1
TiO₂/Fe₂O₃ composite thin films were prepared on common glass substrates by sol-gel processing and dip-drawing method. The effect of Fe₂O₃ content on the photocatalytic and hydrophilic properties of composite films was studied. The results indicate that the photocatalytic activities of composite TiO₂ films are superior to that of pure TiO₂ film, and the film containing 0.5% Fe₂O₃ has the best photocatalytic activity. The hydrophilicity is difference with variant Fe₂O₃ content, the films containing 0.05%~0.1% Fe₂O₃ have the best hydrophilicity and their contact angles are 0°.
Intestinal Development and Function of Broiler Chickens on Diets Supplemented with Clinoptilolite
Wu, Q.J.,Zhou, Y.M.,Wu, Y.N.,Wang, T. Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.7
The purpose of this study was to evaluate the effect of natural clinoptilolite (NCLI) and modified clinoptilolite (MCLI) on broiler performance, gut morphology, intestinal length and weight, and gut digestive enzyme activity. A total of 240 d-old male chicks were randomly assigned to 3 treatments, each of which comprised 8 pens of 10 chicks per pen. Birds in the control group were fed the basal diet, while those in the experimental groups were fed diets supplemented with NCLI at 2% (NCLI group), or MCLI at 2% (MCLI group), respectively, for 42 d. Compared with the control, supplementation with NCLI or MCLI had no significant (p>0.05) effects on productive parameters from d 1 to 42. Supplementation with NCLI or MCLI had no influence on the relative length and weight of small intestine at d 1 to 21. But supplementation with NCLI or MCLI significantly reduced the relative weight of duodenum. Supplementation with MCLI and NCLI was associated with greater (p<0.05) villus height in the jejunal and ileal mucosa compared with those areas in the controls from d 1 to 42. However, supplementation with NCLI and MCLI had no significant (p>0.05) influence on the crypt depth in the jejunal and ileal mucosa compared with those in the controls. The addition of either NCLI or MCLI to the diet improved the activities of total protease, and amylase in the small intestinal contents. In conclusion, supplementation with NCLI or MCLI in diets improved intestinal morphology, increased the intestinal length and weigh and gut digestive enzyme activity.
Wu, X.L.,Liu, R.Z.,Shi, Q.S.,Liu, X.C.,Li, X.,Wu, M.S. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.4
Maintaining maximum genetic variability is of critical importance with in-situ conservation of animal species in small populations. Marker-assisted mating (MAM) was suggested to achieve maximum heterozygosity in offspring populations. The aims of this research was to investigate and decide the effectiveness and promising types of MAM to achieve this goal. Analysis of variance with simulation data revealed that the heterozygosity in offspring populations was significantly determined by sire heterozygosity from mating of non-inbred parent animals, and significantly by sire heterozygosity and percent parental difference in offspring reproduced by inbred parents. Seven types of marker-assisted mating schemes were examined, in which offspring exhibited heterozygosity that was -0.01 to 7.37% below or above that from random mating of non-inbred parent animals, and 0.00 to 16.39% above that from random mating of inbred parent animals. The great increase in offspring heterozygosity was observed with mating by tandem maximizing sire heterozygosity, percent parental difference, and dam heterozygosity. Random mating resulted in fluctuation of offspring heterozygosity. These results suggested that MAM was a promising method for maintaining maximum offspring variability in in-situ conservation of animal species in small populations.
Wu, S. Q.,Yu, X. K.,Lian, M. L.,Park, S. Y.,Piao, X. C. POLISH ACADEMY SCIENCES WARSAW 2014 Acta physiologiae plantarum Vol.36 No.4
Hypericum perforatum L. is a traditional medicinal plant for the treatment of depression and wound healing, and hypericin is one of the main effective active substances. To optimize the culture system for producing hypericin in adventitious root, this study used balloon-type airlift bioreactors to investigate the effect of air volume, inoculation density, indole-3-butyric acid (IBA) concentration and methyl jasmonate (MeJA) concentration on hypericin content and productivity during adventitious root culture. Hypericin content and productivity were improved with increasing air volume, and 0.1 vvm (air volume/culture volume/min) was optimal for hypericin production. Inoculation density also had a great effect on hypericin accumulation. Hypericin content and productivity were favorable in an inoculation density of 5.0 g l(-1) and decreased when inoculation densities were lower or higher than 5.0 g l(-1). Furthermore, 1.25 mg l(-1) IBA enhanced hypericin content and productivity, but too low (a parts per thousand currency sign0.50 mg l(-1)) or too high (a parts per thousand yen1.50 mg l(-1)) IBA concentrations decreased hypericin accumulation. MeJA concentration significantly affected biomass accumulation and hypericin production. The biomass decreased and hypericin production increased with increasing MeJA concentration. Optimum hypericin content (1.61 mg g(-1) DW) and productivity (15.57 mg l(-1)) were obtained at 350 mu M MeJA. The hypericin content in bioreactor-grown adventitious roots was lower than in 3-year field-grown plants, but significantly higher than that in in vitro-grown plantlets and 1-year field-grown plants. Thus, the bioreactor culture of adventitious roots can realize rapid and mass production of hypericin in H. perforatum.
Management of vesicoureteral reflux in neurogenic bladder
Charlotte Q. Wu,Israel Franco 대한비뇨의학회 2017 Investigative and Clinical Urology Vol.58 No.-
Vesicoureteral reflux (VUR) is a significant risk factor for pyelonephritis and renal scarring. VUR can occur through a defective ureterovesical junction (UVJ) or an overwhelmed normal UVJ mechanism such as in bladder dysfunction of congenital, acquired, or behavioral etiology. There are numerous causes for the development of a neurogenic bladder from spinal dysraphisms to spinal cord trauma and even centrally based abnormalities in children with apparently normal motor function (inappropriately termed nonneurogenic neurogenic bladder). The foundation of managing reflux in these neurogenic bladders is to maintain low bladder pressures which will commonly mean that compliance will be normal as well. There have been several publications that have shown that if bladder pressures are lowered simply with clean intermittent catheterization and medications that the reflux can resolve spontaneously. Alternatively, the patients that are in need of bladder augmentation can have spontaneous resolution of their reflux with the resulting increase in capacity. Surgical intervention is called for when bladder capacity is adequate and the reflux persists or if it is part of a larger operation to increase capacity and to manage outlet resistance. In some instances, reimplantation is necessary because the ureters interfere with the bladder neck procedure. Aside from open and robotic surgical intervention the use of endoscopic injectable agents is beginning to become more popular especially when combined with intravesical botulinum toxin A injections. Great strides are being made in the management of patients with neurogenic bladders and we are seeing more choices for the urologist to be able to manage these patients.