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| 1 | Experimental and numerical study of failure behavior and mechanism of coal under dynamic compressive loads显示文摘A comprehensive understanding of the failure behavior and mechanism of coal is a prerequisite for dealing with dynamic problems in mining space.In this study,the failure behavior and mechanism of coal under uniaxial dynamic compressive loads were experimentally and numerically investigated.The experiments were conducted using a split Hopkinson pressure bar(SHPB)system.The results indicated that the typical failure of coal is lateral and axial at lower loading rates and totally smashed at higher loading rates.The further fractography analysis of lateral and axial fracture fragments indicated that the coal failure under dynamic compressive load is caused by tensile brittle fracture.In addition,the typical failure modes of coal under dynamic load were numerically reproduced.The numerical results indicated that the axial fracture is caused directly by the incident compressive stress wave and the lateral fracture is caused by the tensile stress wave reflected from the interface between coal specimen and transmitted bar.Potential application was further conducted to interpret dynamic problems in underground coal mine and it manifested that the lateral and axial fractures of coal constitute the parallel cracks in the coal mass under roof fall and blasting in mining space. | Junjun Feng Enyuan Wang Qisong Huang Houcheng Ding Xiangyang Zhang | 2020 | International Journal of Mining Science and Technology2020，30，5： | 13 |
| 2 | Nutritional Composition and Assessment of Gracilaria lemaneiformis Bory显示文摘化学作文,矿物质元素,维生素,免费的丰满的酸和氨基酸可食的红水藻 Gracilaria lemaneiformis Bory 满足,在 Nan'ao 岛附近的海成年,广东省,在现在的学习被分析。Gracilaria lemaneiformis Bory 显示出 14.65% 的一个全部的糖内容。蛋白质内容是 21% ,哪个约 41% 决心是必要氨基酸(EAA ) 。主要氨基酸部件是 glutamic 酸,白氨酸,精氨酸,和丙氨酸。EAA assayed,蛋氨酸和半胱氨酸看起来与食物和联合国的农业组织提供的 EAA 模式相比是大多数限制氨基酸。全部的类脂化合物内容是 0.87% 并且包括了不饱和的丰满的酸(61%) 的一篇高作文,主要当罂酸的酸和油的酸,和一些多元不堡和总计丰满的酸;十六酸酸是浸透的酸的主要部件(39%) 。维生素 C,碘,磷,和锌相对高级也是在 G 的现在。lemaneiformis。在 G 之间的营养的作文。lemaneiformis 和 Nostoc flagelliforme,广泛地在中国社会被吃的稀罕水藻,被比较。结果建议那 N。flagelliforme 能被用代替由 G。lemaneiformis,不是仅仅因为他们的类似的形状,而且因为他们的近似营养的作文。Gracilaria lemaneiformis 以后可以可能在人的食谱用作潜在的健康食物。 | Xue Wen Changlian Peng Houcheng Zhou Zhifang Lin Guizhu Lin Shaowei Chen Ping Li | 2006 | Journal of Integrative Plant Biology2006，48，9： | 13 |
| 3 | Energy dissipation rate: An indicator of coal deformation and failure under static and dynamic compressive loads显示文摘Dynamic disasters in Chinese coal mines pose a significant threat to coal productivity. Thus, a thorough understanding of the deformation and failure processes of coal is necessary. In this study, the energy dissipation rate is proposed as a novel indicator of coal deformation and failure under static and dynamic compressive loads. The relationship between stress-strain, uniaxial compressive strength, displacement rate, loading rate, fractal dimension, and energy dissipation rate was investigated through experiments conducted using the MTS C60 tests(static loads) and split Hopkinson pressure bar system(dynamic loads). The results show that the energy dissipation rate peaks are associated with stress drop during coal deformation, and also positively related to the uniaxial compressive strength. A higher displacement rate of quasi-static loads leads to an initial increase and then a decrease in energy dissipation rate, whereas a higher loading rate of dynamic loads results in larger energy dissipation rate. Theoretical analysis indicates that a sudden increase in energy dissipation rate suggests partial fracture occurring within coal under both quasi-static and dynamic loads. Hence, the energy dissipation rate is an essential indicator of partial fracture and final failure within coal, as well as a prospective precursor for catastrophic failure in coal mine. | Feng Junjun Wang Enyuan Chen Xia Ding Houcheng | 2018 | International Journal of Mining Science and Technology2018，28，3： | 12 |
| 4 | Co-firing of levator palpebrae and masseter muscles links the masticatory and oculomotor system in humans显示文摘Simultaneous co-firing of the levator palpebrae(LP) and pterygoid muscles were recorded in Marcus Gann Syndrome(MGS) patients in early clinical studies. 'Release hypothesis' proposed an intrinsic masticatory oculo?motor neural circuit and this kind circuit, which, however, has been observed only in amphibian. On the other hand,congenital miswiring hypothesis has overwhelmed other interpretations. However, the same phenomenon visualized in MGS cases was unveiled in human subjects without any sign of congenital oculomotor disorder. To further study co-firing of the upper eyelid and jaw muscles, we applied non-invasive EMG recording of the upper eyelid and ipsilateral masseter muscle belly in nine healthy volunteers. LP activity was determined initially by looking upward and active retraction of upper eyelid with head fixed. Then, dual channel inputs from upper eyelid and masseter muscle was recorded during tooth occlusion motivated by isometric masseter muscle contraction without jaw and face moving. The EMG recorded from upper eyelid when the subjects retracted eyelid with head fixed exhibited the same pattern as that collected during tooth occlusion, but the pattern was completely different from EMG of active eye closure. This reflects tooth occlusion evoked LP activity. Then, simultaneous co-firing of the LP and masseter muscle was recorded simultaneously during tooth occlusion without jaw movement. Finally, the aforemen?tioned co-firing was recorded when the subjects conducted rhythmic occlusion and synchronous EMG from both muscles was acquired. In conclusions, humans may also have an intrinsic masticatory oculomotor circuit and release hypothesis may apply, at least, to some cases of MGS, | Houcheng Liang Jinxin Song Di Shen Ying Qiao Jingdong Zhang | 2015 | The Journal of Biomedical Research2015，29，4： | 4 |
| 5 | The protective effect of 17 beta-estradiol on oxygen-induced retinopathy and its relation with the changes of malondialdehyde显示文摘Objective:Retinopathy of prematurity is becoming obvious with the improvement of neonatal ambulance. However there is still not a good treatment. The present study is to observe the effect of 17 beta-estradiol (E2) on oxygen-induced retinopathy (OIR), and explore the relationship between the changes of avascular area and malondialdehyde (MDA) in retina. Methods: Newborn oxygen-exposed mice underwent subcutaneous injections of different dose of E2 (0.1 μg, 1.0 μg, 10.0 μg ), tamoxifen or phosphate buffered saline (PBS; controls)everyday from post-natal day (p)7 to p17. At p17, retinal flat mounts were scored for the percentage of avascular/total retinal area, and pathological changes during revascularization. The MDA concentration in the retina was determined also. In the most efficacious E2 group (10.0 μg), 100.0 μg tamoxifen was also administered, and the percentage of capillary-free/total retinal area determined, and the retinal malondialdehyde concentration assayed. Results: The mean percentage of capillary-free area over total retinal area was 0(PBS, in room air), 34.197±1.301(PBS, in hyperoxia), 23.685±0.407 (0.1 μg E2), 14.648±0.355 (1.0 μg E2), 4.693±0.450 (10.0 μg E2) and 32.240±0.654 (10.0 μg E2 +100.0 μg tamoxifen). The difference was significant (F=2778.759, P<0.01), and the difference between any two groups were also significant (all P value were less than 0.01). The predilection of tufts and clusters during revascularization was mainly aggregated in zones 2 and 3, but the difference of retinal neovascular clusters and tufts in fourth zone among different groups were significant [clusters (F=44.719, P<0.01) vs tufts (F =39.997,P<0.01)]. The mean MDA concentration were 0.711±0.037(PBS, in room air), 2.084±0.066 (PBS, in hyperoxia), 1.829±0.091(0.1 μg E2), 1.152±0.067(1.0 μg E2), 0.796±0.027(10.0 μg E2), 1.988±0.049(10.0 μg E2 +100.0 μg tamoxifen) (F=628.103, P<0.01). The difference between any two groups were also significant (all P value were less than 0.05). The close relation between the percentage of avascular/total retinal area and MDA concentration was also verified (r=0.981, P<0.01). Conclusion: Oxidative stress responses play a pivotal role in OIR, by means of receptor pathway. E2 can alleviate oxidative stress reaction, and thus ameliorate the severity of oxygen induced retinopathy. | Hongbing Zhang Naixue Sun Houcheng Liang Xianghua Xiao Xianning Liu Yani Wang | 2010 | The Journal of Biomedical Research2010，24，2： | 3 |
| 6 | Electromyography and Fos immunostaining study establish a possible functional link between trigeminal proprioception and the oculomotor system in rats显示文摘The objective of this study was to explore whether there was a functional link between trigeminal proprioception and the oculomotor system mediated through jaw muscle afferents.Electromyography(EMG) was undertaken of the levator palpebrae(LP) and superior rectus(SR),and Fos expression was detected in the brainstem following consecutive down-stretching of the lower jaw at 2-4 Hz in rats.Retrograde tracing was undertaken of the interstitial nucleus of Cajal and Darkschewitsch nucleus(INC/DN) pre-oculomotor neurons.FMG-like responses were recorded from the LP/SR during down-stretching of the lower jaw at 2-4 Hz in 3 out of 11 rats.Fos expression was induced by consecutive down-stretching of the lower jaw at 2-4 Hz for 20-30 seconds.Interestingly,Fos expression was distributed mainly in the bilateral INC/DN area.We also examined Fos-like immunoreactivity in central mesencephalic and paramedian pontine reticular formation that harbors premotor neurons controlling horizontal eye movement,but no Fos-like staining was observed therein.By injection of retrograde tracers into the oculomotor nucleus combined with Fos immunostaining,double labeled pre-oculomotor neurons were visualized to distribute in the INC/DN.In conclusions,there may exist a trigeminal proprioceptive-oculomotor system neural circuit through jaw muscle afferents in rats.Judging from Fos distribution pattern,this pathway might be related to vertical and torsional eye movements. | Houcheng Liang Jingdong Zhang Pifu Luo Hongna Zhu Ying Qiao Anle Su Ting Zhang | 2017 | The Journal of Biomedical Research2017，31，3： | 2 |
| 7 | Microglia activation mediated by toll-like receptor-4 impairs brain white matter tracts in rats显示文摘Microglia activation and white matter injury coexist after repeated episodes of mild brain trauma and ischemic stroke. Axon degeneration and demyelination can activate microglia; however, it is unclear whether early microglia activation can impair the function of white matter tracts and lead to injury. Rat corpus callosum(CC) slices were treated with lipopolysaccharide(LPS) or LPS + Rhodobacter sphaeroides(RS)-LPS that is a toll-like receptor 4(TLR-4) antagonist. Functional changes reflected by the change of axon compound action potentials(CAPs) and the accumulation of β-amyloid precursor protein(β-APP) in CC nerve fibers. Microglia activation was monitored by ionized calcium binding adaptor-1 immunofluorescent stain, based on well-established morphological criteria and paralleled proportional area measurement. Input-output(I/O) curves of CAPs in response to increased stimuli were significantly downshifted in a dose-dependent manner in LPS(0.2, 0.5 and 1.0μg/mL)-treated slices, implying that axons neurophysiological function was undermined. LPS caused significant β-APP accumulation in CC tissues,reflecting the deterioration of fast axon transport. LPS-induced I/O curve downshift and P-APP accumulation were significantly reversed by the pre-treatment or co-incubation with RS-LPS. RS-LPS alone did not change the I/O curve.The degree of malfunction was correlated with microglia activation, as was shown by the measurements of proportional areas. Function of CC nerve fibers was evidently impaired by microglia activation and reversed by a TLP-4 antagonist, suggesting that the TLP-4 pathway lead to microglia activation. | Xinglong Yang Jingdong Zhang Lian Duan Huangui Xiong Yanping Jiang Houcheng Liang | 2018 | The Journal of Biomedical Research2018，32，2： | 2 |
| 8 | Per- formance analysis and multi-objective optimization of a new molten carbonate fuel cell system显示文摘 | Zhang Houcheng Lin Guoxing Chen Jinean | 2011 | Interna- tional Journal of Hydrogen Energy2011，36，6： | 1 |
| 9 | Plant regeneration from in vitro leaves of the peach rootstock ' Nemaguard' (Prunus persicaXP, davidiana) 显示文摘 | HOUCHENG ZHOU MING LI XIA ZHAO XIUCAI FAN AI- GUANG GUO | 2010 | Plant Cen Tissue and Organ Culture2010，101，： | 1 |
| 10 | Erratum: Tg737 inhibition results in malignant transformation in fetal liver stem/progenitor cells by promoting cell‐cycle progression and differentiation arrest显示文摘 | Nan You Weihui Liu Xiao Zhong Ru Ji Ming Zhang Houcheng You Kefeng Dou Kaishan Tao | 2011 | Mol Carcinog2011，，10： | 1 |
| 11 | Effects of nano-devices on growth, quality and activities of enzymes in nitrogen metabolism of hydroponic lettuce 显示文摘 | Guilian Li Riyuan Chen Houcheng Liu | 2014 | Key Engineering Materials2014，701，： | 1 |
| 12 | Enhancing the adhesion of diamond films on cobalt-cemented tungsten carbide sub- strate using tungsten particles via MPCVD system显示文摘 | Lai Wenchi Wu YuShiang Chang Houcheng | 2011 | Journal of Alloys and Compounds2011，509，12： | 1 |
| 13 | Parametric optimum design of a photon-enhanced thermionic solar cell显示文摘 | Shanhe Su Houcheng Zhang Xiaohang Chen Junyong Kang Jincan Chen | 2013 | Solar Energy Materials and Solar Cells2013，，： | 1 |
| 14 | Growth and Quality of Chinese Kale Grown Under Different LEDs显示文摘[Objective] This study was conducted to investigate the effects of light quality on growth and quality of Chinese kale(Brassica alboglabra Bailey). [Method]Chinese kale was grown in hydroponic under three different Light Emitting Diode(LEDs) conditions [red∶blue=8∶1(8R1B), red∶blue=6∶3(6R3B) and red∶green∶blue=6∶2∶1(6R2G1B), 12 h light, 50 μmol/(m2·s)]. Then its growth and quality indices including root and shoot fresh weight and dry weight, concentrations of soluble protein, vitamin C, nitrate, soluble phenols, flavonoids, soluble sugar, free amino acids, and activity of nitrate reductase were measured. [Result] There was no significant difference in plant height, diameter of flower stalk and leaf number among three LED treatments. The fresh weight of shoot, root and plant in 8R1 B and 6R2G1 B was significantly higher than in 6R3 B. The dry weight of shoot and plant in 8R1 B was significantly higher than in 6R3 B. The concentrations of vitamin C, soluble protein and soluble sugar in flower stalk of 6R3 B treatment were significantly higher than those in 8R1 B and 6R2G1 B, while there was no remarkable difference in concentrations of reducing sugar, soluble phenol, flavonoids and free amino acid among the three treatments. The nitrate concentration in flower stalk of 6R3 B was significantly lower than in the other two treatments, and the activity of nitrate reductase in6R3 B was significantly higher than in the other two treatments. [Conclusion] The LED treatment of red:blue=6:3 was more suitable for the growth of Chinese kale. | Jintong XIN Houcheng LIU Shiwei SONG Riyuan CHEN Guangwen SUN | 2015 | Agricultural Science & Technology2015，16，1： | 0 |
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