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| 1 | Effects of different dietary energy and protein levels and sex on growth performance,carcass characteristics and meat quality of F1 Angus x Chinese Xiangxi yellow cattle显示文摘Background:The experiment evaluated the effect of nutrition levels and sex on the growth performance,carcass characteristics and meat quality of F1 Angus × Chinese Xiangxi yellow cattle.Methods:During the background period of 184 d,23 steers and 24 heifers were fed the same ration,then put into a2×2×2 factorial arrangement under two levels of- dietary energy(TON:70/80%DM),protein(CP:11.9/14.3%DM)and sex(S:male/female) during the finishing phase of 146 d.The treatments were-(1) high energy/low protein(HELP),(2) high energy/high protein(HEHP),(3) low energy/low protein(LELP) and(4) low energy/high protein(LEHP).Each treatment used 6 steers and 6 heifers,except for HELP- 5 steers and 6 heifers.Results:Growth rate and final carcass weight were unaffected by dietary energy and protein levels or by sex.Compared with the LE diet group,the HE group had significantly lower dry matter intake(DMI,6.76 vs.7.48 kg DM/d),greater chest girth increments(46.1 vs.36.8 cm),higher carcass fat(19.9 vs.16.3%) and intramuscular fat content(29.9 vs.22.8%DM).The HE group also had improved yields of top and medium top grade commercial meat cuts(39.9 vs.36.5%).The dressing percentage was higher for the HP group than the LP group(53.4 vs.54.9%).Steers had a greater length increment(9.0 vs.8.3 cm),but lower carcass fat content(16.8 vs.19.4%) than heifers.The meat quality traits(shear force value,drip loss,cooking loss and water holding capacity) were not affected by treatments or sex,averaging 3.14 kg,2.5,31.5 and 52.9%,respectively.The nutritive profiles(both fatty and amino acid composition) were not influenced by the energy or protein levels or by sex.Conclusions:The dietary energy and protein levels and sex significantly influenced the carcass characteristics and chemical composition of meat but not thegrowth performance,meat quality traits and nutritive profiles. | Lingyan Li Yuankui Zhu Xianyou Wang Yang He Binghai Cao | 2014 | Journal of Animal Science and Biotechnology2014，5，4： | 21 |
| 2 | Removal of ammonium ion from water by Na-rich birnessite:Performance and mechanisms显示文摘Na-rich birnessite(NRB) was synthesized by a simple synthesis method and used as a high-efficiency adsorbent for the removal of ammonium ion(NH+4) from aqueous solution.In order to demonstrate the adsorption performance of the synthesized material,the effects of contact time,pH,initial ammonium ion concentration,and temperature were investigated.Adsorption kinetics showed that the adsorption behavior followed the pseudo second-order kinetic model.The equilibrium adsorption data were fitted to Langmuir and Freundlich adsorption models and the model parameters were evaluated.The monolayer adsorption capacity of the adsorbent,as obtained from the Langmuir isotherm,was 22.61 mg NH+4-N/g at283 K.Thermodynamic analyses showed that the adsorption was spontaneous and that it was also a physisorption process.Our data revealed that the higher NH+4adsorption capacity could be primarily attributed to the water absorption process and electrostatic interaction.Particularly,the high surface hydroxyl-content of NRB enables strong interactions with ammonium ion.The results obtained in this study illustrate that the NRB is expected to be an effective and economically viable adsorbent for ammonium ion removal from aqueous system. | Ya Cheng Tinglin Huang Xinxin Shi Gang Wen Yuankui Sun | 2017 | Journal of Environmental Sciences2017，29，7： | 12 |
| 3 | Structural characteristic and ammonium and manganese catalytic activity of two types of filter media in groundwater treatment显示文摘Two types of filter media in groundwater treatment were conducted for a comparative study of surface structure and catalytic performance. Natural filter media was adopted from a conventional aeration–filtration groundwater treatment plant, and active filter media as a novel and promising filter media was also adopted. The physicochemical properties of these two kinds of filter media were characterized using numerous analytical techniques,such as X-Ray diffraction(XRD), scanning electron microscope(SEM), energy dispersive X-ray(EDX), X-ray photoelectron spectroscopy(XPS) and Zeta potential. The catalytic activities of these filter media were evaluated for ammonium and manganese oxidation.XRD data showed that both active filter media and natural filter media belonged to birnessite family. A new manganese dioxide(Mn O2) phase(PDF#72-1982) was found in the structure of natural filter media. The SEM micrograph of natural filter media showed honeycomb structures and the active filter media presented plate structures and consisted of stacked particle. These natural filter media presented lower level of some trace elements such as calcium and magnesium, lower degree of crystallinity, lower Mn(III) content and lattice oxygen content than that of active filter media, which were associated with its poor ammonium and manganese catalytic activities. In addition, some γ-Fe2 O3 and Mn CO3 were found in the coating which may hinder the ammonium and manganese catalytic oxidation. This study provides a thorough and comprehensive understanding about the most commonly used filter media in water treatment, which can provide a theoretical guide to practical applications. | Ya Cheng Tinglin Huang Lijie Cheng Yuankui Sun Laisheng Zhu Ye Li | 2018 | Journal of Environmental Sciences2018，30，10： | 8 |
| 4 | Characteristics of Breccias and C-O-Sr-S Isotope Geochemistry of the Duocaima Pb-Zn Deposit in Tuotuohe, Qinghai Province: Implications for the Ore-forming Process显示文摘The Duocaima carbonate-hosted Pb-Zn deposit is a newly found large deposit in the southern area of Qinghai Province.In this paper, the characteristics, genesis, significance to Pb-Zn mineralization of the widely developed breccias, and the ore-forming process have been carefully studied based on geological documentation of drilling holes, microscopic observations of petrography and microstructure and some stable isotope measurements.Based on the compositions of the clast and matrix, the breccias can be classified into three types: limestone clasts cemented by marl; limestone clasts with fine-grained calcareous materials; and limestone clasts cemented by hydrothermal calcite.The mineralization in the first type of breccia is weak, whereas it is strong in the latter two types of breccias.According to the locations of occurrence and structural characteristics of the breccias along with the relationship between the breccias and mineralization, part of the limestone clasts that are cemented by marl and outcrop in the contact zone between the Wudaoliang Formation(Nw) and the underlying Jiushidaoban Formation(Pj) are attributed to synsedimentary fault-genetic breccia, whereas the last of the limestone clasts that are cemented by marl and developed in the Jiushidaoban Formation(Pj) are attributed to the breccia generated by karst cave collapse; the limestone clasts with fine-grained calcareous materials and the limestone clasts cemented by hydrothermal calcite are attributed to breccia formed by hydrothermal dissolution.The breccia formed by karst collapse had consistently evolved for a long period of time, while the breccias with other origins were formed around the period of mineralization(i.e., about or slightly later than 20–16 Ma).The breccia generated by karst cave collapse and hydrothermal dissolution are somewhat related; the formation of the breccia from karst cave collapse provided open space for the later mineralization and reaction between hydrothermal fluids and host rocks, and the subsequent strong dissolution by hydrothermal fluids transformed some of the breccia formed earlier by karst cave collapse.Meanwhile, carbonate host rocks with breccias and brecciaed mineralization can be a potential sign of Mississippi Valley Type(MVT) deposits and important indicators for regional mineral exploration.The δ13CV-PDB, δ18OVSMOW, and 87Sr/86 Sr values of hydrothermal calcite in the Duocaima deposit range from 4.3‰ to 7.1‰, 14.9‰ to 20.1‰, and 0.707494 to 0.708185, respectively; the δ13CV-PDB, δ18OV-SMOW, and 87Sr/86 Sr values of the host limestones of the Jiushidaoban Formation range from 3.6‰ to 5.3‰, 18.0‰ to 20.5‰, and 0.707372 to 0.707945, respectively.The δ13CV-PDB and 87Sr/86 Sr values of hydrothermal calcite and limestone are similar, indicating single sources of C and Sr in this deposit, with the likely source being the limestone of the Jiushidaoban Formation.The minor scattering of the δ18OV-SMOW values suggests that different O isotope fluids underwent the isotope exchange reaction.The C-O-Sr isotope characteristics indicate that the host limestones experienced a dissolution and precipitation process during mineralization, which is beneficial to improving the porosity of host rocks and promoting the precipitation of metal sulfides.The δ34SV-CDT value of the breccia-type mineralization sulfides ranges from-30.4‰ to-0.3‰; that is, the δ34SV-CDT value is negative with considerable variation, illustrating that during the breccia-type mineralization process, the bacteriogenic reduction of sulfates provided the vast majority of sulfur, whereas the thermochemical reduction of sulfates was relatively unimportant.The brecciation that occurred as a result of karst cave collapse was mainly generated by the dissolution of groundwater; however, the brecciation related to hydrothermal dissolution and mineralization processes were caused by mixing of different fluids. | HAO Hongda SONG Yucai LI Liansong JIA Zongyong WANG Yuankui LIU Qun | 2015 | Acta Geologica Sinica(English Edition)2015，89，5： | 4 |
| 5 | A comparison study of the start-up of a MnO_x filter for catalytic oxidative removal of ammonium from groundwater and surface water显示文摘As an efficient method for ammonium(NH_4^+)removal,contact catalytic oxidation technology has drawn much attention recently,due to its good low temperature resistance and short start-up period.Two identical filters were employed to compare the process for ammonium removal during the start-up period for ammonium removal in groundwater(Filter-N)and surface water(Filter-S)treatment.Two types of source water(groundwater and surface water)were used as the feed waters for the filtration trials.Although the same initiating method was used,Filter-N exhibited much better ammonium removal performance than Filter-S.The differences in catalytic activity among these two filters were probed using X-ray diffraction(XRD),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),and compositional analysis.XRD results indicated that different manganese oxide species were formed in Filter-N and Filter-S.Furthermore,the Mn3p XPS spectra taken on the surface of the filter films revealed that the average manganese valence of the inactive manganese oxide film collected from Filter-S(FS-MnO_x)was higher than in the film collected from Filter-N(FN-MnO_x).Mn(IV)was identified as the predominant oxidation state in FS-MnO_xand Mn(III)was identified as the predominant oxidation state in FN-MnO_x.The results of compositional analyses suggested that polyaluminum ferric chloride(PAFC)used during the surface water treatment was an important factor in the mineralogy and reactivity of MnO_x.This study provides the theoretical basis for promoting the wide application of the technology and has great practical significance. | Ya Cheng Ye Li Tinglin Huang Yuankui Sun Xinxin Shi Yuezong Shao | 2018 | Journal of Environmental Sciences2018，30，3： | 4 |
| 6 | Weak magnetic field accelerates chromate removal by zero-valent iron显示文摘Weak magnetic field(WMF) was employed to improve the removal of Cr(VI) by zero-valent iron(ZVI) for the first time. The removal rate of Cr(VI) was elevated by a factor of 1.12–5.89 due to the application of a WMF, and the WMF-induced improvement was more remarkable at higher Cr(VI) concentration and higher p H. Fe2+was not detected until Cr(VI) was exhausted, and there was a positive correlation between the WMF-induced promotion factor of Cr(VI) removal rate and that of Fe2+release rate in the absence of Cr(VI) at pH 4.0–5.5. These phenomena imply that ZVI corrosion with Fe2+release was the limiting step in the process of Cr(VI) removal. The superimposed WMF had negligible influence on the apparent activation energy of Cr(VI) removal by ZVI, indicating that WMF accelerated Cr(VI)removal by ZVI but did not change the mechanism. The passive layer formed with WMF was much more porous than without WMF, thereby facilitating mass transport. Therefore,WMF could accelerate ZVI corrosion and alleviate the detrimental effects of the passive layer, resulting in more rapid removal of Cr(VI) by ZVI. Exploiting the magnetic memory of ZVI, a two-stage process consisting of a small reactor with WMF for ZVI magnetization and a large reactor for removing contaminants by magnetized ZVI can be employed as a new method of ZVI-mediated remediation. | Pian Feng Xiaohong Guan Yuankui Sun Wonyong Choi Hejie Qin Jianmin Wang Junlian Qiao Lina Li | 2015 | Journal of Environmental Sciences2015，27，5： | 2 |
| 7 | Dynamic deformation behavior of a FeCrNi medium entropy alloy显示文摘Deformation behavior of a FeCrNi medium entropy alloy(MEA)prepared by powder metallurgy(P/M)method was investigated over a wide range of strain rates.The FeCrNi MEA exhibits high strain-hardening ability,which can be attributed to the multiple deformation mechanisms,including dislocation slip,deformation induced stacking fault and mechanical twinning.The shear localization behavior of the FeCrNi MEA was also analyzed by dynamically loading hat-shaped specimens,and the distinct adiabatic shear band cannot be observed until the shear strain reaches~14.5.The microstructures within and outside the shear band exhibit different characteristics:the grains near the shear band are severely elongated and significantly refined by dislocation slip and twinning;inside the shear band,the initial coarse grains completely disappear,and transform into recrystallized ultrafine equiaxed grains by the classical rotational dynamic recrystallization mechanism.Moreover,microvoids preferentially nucleate in the central areas of the shear band where the temperature is very high and the shear stress is highly concentrated.These microvoids will coalesce into microcracks with the increase of strain,which eventually leads to the fracture of the shear band. | Ao Fu Bin Liu Zezhou Li Bingfeng Wang Yuankui Cao Yong Liu | 2022 | Journal of Materials Science & Technology2022，，5： | 2 |
| 8 | Phase decomposition behavior and its effects on mechanical properties of TiNbTa0.5ZrAl0.5 refractory high entropy alloy显示文摘The mechanical properties of refractory high entropy alloys(RHEAs) strongly depend on their phase structures. In this work, the phase stability of a BCC TiNbTa0.5ZrAl0.5 refractory high entropy alloy subjected to thermomechanical processing was evaluated, and the effects of phase decomposition on room/high temperature mechanical properties were quantitatively studied. It was found that, the thermomechanical processing at 800℃and 1200℃ leads to phase decomposition in the TiNbTa0.5ZrAl0.5 alloy. The phase decomposition is caused by the rapid rising of free energy of the primary BCC phase. The effect of the precipitates on room temperature strength is determined by the competition between the increasing in precipitation strengthening and the decreasing in solid solution strengthening. But at high temperatures(800-1200℃), the phase decomposition causes significant reduction in strength, mainly due to the grain boundary sliding and the decreasing in solid solution strengthening. | Yuankui Cao Weidong Zhang Bin Liu Yong Liu Meng Du Ao Fu | 2021 | Journal of Materials Science & Technology2021，，7： | 2 |
| 9 | Catalytic selective hydrogenation of cinnamldehyde to hydrocinnamaldehyde 显示文摘 | Zhang Yuankui Liao Shijian Xu Yun | 2000 | Appl Catal A2000，192，： | 1 |
| 10 | Pyrolysates distribution and kinetics of Shenmu long flame coal显示文摘 | Yuankui Lin Qingsong Li Xuefeng Li Kang Ji Haipeng Zhang Yingmin Yu Yuhe Song Yu Fu Lanyi Sun | 2014 | Energy Conversion and Management2014，，： | 1 |
| 11 | Corrigendum to “Application of titanium dioxide in arsenic removal from water: A review” [J. Hazard. Mater. 215–216 (2012) 1–16]显示文摘 | Xiaohong Guan Juanshan Du Xiaoguang Meng Yuankui Sun Bo Sun Qinghai Hu | 2012 | Journal of Hazardous Materials2012，，： | 1 |
| 12 | Catalytic selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde显示文摘 | Yuankui Zhang Shijian Liao Yun Xu Daorong Yu | 2000 | Applied Catalysis A General2000，，2： | 1 |
| 13 | Catalytic selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde 显示文摘 | Zhang Yuankui Liao Shijian Xu Yun | 2000 | Applied Catalysis A : General2000，192，14： | 1 |
| 14 | Chemical reactivities of magnesium nanopowders显示文摘 | Yuankui Zhang1 Shijian Liao Yinheng Fan Jie Xu Fudong Wang | 2001 | Journal of Nanoparticle Research2001，3，： | 1 |
| 15 | Reconstruction of 3D face from a single 2D image for face recognition显示文摘 | Yuankui Hu Ying Zheng Zengfu Wang | 2005 | Visual Surveillance and Performance Evaluation of Traching Surveillance2005，，： | 1 |
| 16 | Chemical Reactivities of Magnesium Nanopowders显示文摘 | Yuankui Zhang Shijian Liao Yinheng Fan Jie Xu Fudong Wang | 2001 | Journal of Nanoparticle Research2001，，1： | 1 |
| 17 | Synthesis of nanometric-size magnesium nitride by the nitriding of pre-activated magnesium powder显示文摘 | Shen Cui Shijian Liao Yuankui Zhang Yun Xu Yanfen Miao Min Lu Yinheng Fan Wensheng Guo | 1999 | Journal of Materials Science1999，，22： | 1 |
| 18 | Catalytic selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde显示文摘 | Zhang Yuankui Liao Shijian Xu Yun | 2000 | Applied Catalysis A:General2000，192，14： | 1 |
| 19 | Catalytic selective hydrogenation of cinnamldehyde to hydrocinnamaldehyde显示文摘 | Zhang Yuankui Liao Shijian Xu Yun | 2000 | Appl Catal A2000，192，： | 1 |
| 20 | Catalytic selective hydrogenation of cinnamldehyde to hydrocinnamaldehyde 显示文摘 | Zhang Yuankui Liao Shijian Xu Yun | 2000 | Appl A2000，192，： | 1 |
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