|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Clay mineral composition and their sources for the fluvial sediments of Taiwan Residents rivers显示文摘Located at the collision boundary between the Philippine Sea Plate and the Eurasian Continental Plate,the island of Taiwan is generally recognized as an important example in the MARGINS Program Science Plan and 'source-to-sink' research because of its high tectonic activity,heavy rainfall and unique geography.Large suspended sediment loads are transported to the adjacent ocean by Taiwan Residents rivers every year,making Taiwan an important source of sediments into the adjacent seas and a natural laboratory for studying the systemic movement of fluvial sediments from source to sink.A detailed study on the clay mineral composition of surface sediments collected from the drainage basins of 12 Taiwan Residents rivers using X-ray diffraction methods was conducted.Our results indicated that the clay mineral assemblages consisted dominantly of illite(approximately 73%) and chlorite(approximately 24%),with lesser abundances of kaolinite(approximately 3%) and even lower levels of smectite from the Danshuei River sediments in northwestern Taiwan.The Jhuoshuei River sediments from western Taiwan contained clay mineral assemblages that consisted of illite(approximately 75%) and chlorite(approximately 25%),but they lacked kaolinite and smectite.In southwestern Taiwan,the clay mineral assemblages were dominated by illite(approximately 75%) and chlorite(approximately 23%),but had a low abundance of kaolinite(generally < 2%) and no smectite.The clay mineral assemblages in eastern Taiwan are obviously different from those in western parts of the island.The most noticeable difference is that the average abundance of chlorite in the Hualien River from eastern Taiwan was the highest(approximately 48%) of all the Taiwan Residents rivers.We concluded that,in general,the clay mineral assemblages in Taiwan Residents rivers were mainly composed of illite and chlorite with kaolinite and smectite being scarce,and these trends are different from those in China's mainland rivers.The clay mineral composition shown in this study was primarily determined by the properties of the bedrock,and the differential weathering intensities of the drainage area.The surface sediments in Taiwan's rivers showed a greater abundance of illite and chlorite because the outcropped rocks were mainly composed of Tertiary sedimentary rocks,especially sandstone,shale and slate,and show strong physical weathering.The relatively high relief and more abundant rainfall also caused the clay minerals in the fluvial sediments to be transported to the estuaries down rivers from the mountains and then delivered to the adjacent seas by currents and waves over a shorter time scale. | LI ChuanShun SHI XueFa KAO ShuhJi CHEN MinTe LIU YanGuang FANG XiSheng LUE HuaHua ZOU JianJun LIU ShengFa QIAO ShuQing | 2012 | Chinese Science Bulletin2012，57，6： | 23 |
| 2 | Effects of process parameters on pore structure of semi-coke prepared by solid heat carrier with dry distillation显示文摘The semi-coke was prepared by solid heat carrier with dry distillation in single factor method. The pore structures of raw coal and semi-coke were characterized by Brunauer-Emmett-Teller (BET) and scanning electron microscope (SEM). The results show that the adsorption and desorption isotherm of semi-coke are not coincident. There was a wide pore distribution on the semi-coke, in which mesopores and micropores account for a considerable proportion. Also there are many more secondary pores. With the increase of the final temperature of heat carrier and constant temperature, as well as the decrease of volume ratio of coal and hot carrier reactor, specific surface area and pore volume of semi-coke increased rapidly first and then decreased and finally increased, along with the rapidly reduction of average pore size. SEM photos show that the surface of semi-coke becomes increasingly rough and glossy. | Zhou, Guoli Wu, Jianjun Miao, Zhenyong Hu, Xuelian Li, Xia Shi, Xin Cai, Zhidan Shang, Yukun | 2013 | International Journal of Mining Science and Technology2013，23，3： | 20 |
| 3 | Class I histone deacetylases are major histone decrotonylases: evidence for critical and broad function of histone crotonylation in transcription显示文摘为 histone crotonylation 的酶和读者蛋白质上的最近的研究在抄写支持 histone crotonylation 的功能。然而,为 histone decrotonylation (HDCR ) 负责的酶仍然保持糟糕定义。而且,如果 histone crotonylation 从生理地重要、机能上地不同或对 histone acetylation 冗余,它尚待坚定。这里我们一级 histone deacetylases (HDAC ) 而非 sirtuin 家庭 deacetylases (SIRT ) 是主要 histone decrotonylases 的现在的证据,和那 histone crotonylation 象在哺乳动物的房间的 histone acetylation 一样动态。尤其是,我们与损害 HDAC 产生了新奇 HDAC1 和 HDAC3 异种但是未经触动的 HDCR 活动。用这些异种,我们证明在哺乳动物的房间的选择 HDCR 与宽广 transcriptional 压抑和 crotonylation 然而并非 acetylation 读者蛋白质的减少的倡导者协会相关。而且,我们证明那 histone crotonylation 被充实在并且为老鼠的自强要求了胚胎的干细胞。 | Wei Wei Xiaoguang Liu Jiwei Chen Shennan Gao Lu Lu Huifang Zhang Guangjin Ding Zhiqiang Wang Zhongzhou Chen Tieliu Shi Jiwen Li Jianjun Yu Jiemin Wong | 2017 | Cell Research2017，27，7： | 18 |
| 4 | Evaluation of the Trend Uncertainty in Summer Ozone Valley over the Tibetan Plateau in Three Reanalysis Datasets显示文摘Trend uncertainty in the ozone valley over the Tibetan Plateau(OVTP)and the South Asian high(SAH)during1979–2009 in ERA-Interim(interim reanalysis data from the ECMWF),JRA-55(55-yr reanalysis data from the Japan Meteorological Agency),and NCEP-CFSR(Climate Forecast System Reanalysis)datasets was evaluated.The results showed that the NCEP-CFSR OVTP became strong in the summers of 1979–2009,whereas it became weak according to ERA-Interim and JRA-55.Satellite data merged with TOMS(Total Ozone Mapping Spectrometer)and OMI(Ozone Monitoring Instrument)agreed with the OVTP trend of NCEP-CFSR.The OVTP strengthening in NCEP-CFSR may have been caused by SAH intensification,a rising tropopause,and increasing ozone over non-TP(non-Tibetan Plateau)areas(27°–37°N,<75°E and>105°E).Analogously,the OVTP weakening in ERA-Interim and JRA-55 may have been affected by weakening SAH,descending tropopause,and decreasing non-TP ozone. | Dong GUO Yucheng SU Xiuji ZHOU Jianjun XU Chunhua SHI Yu LIU Weiliang LI Zhenkun LI | 2017 | Journal of Meteorological Research2017，31，2： | 13 |
| 5 | Double-directional control bolt support technology and engineering application at large span Y-type intersections in deep coal mines显示文摘Under deep and complex geological conditions,severe deformation occurs at intersection points of Y-type roadways with large cross sections during engineering projects in coal mines,especially at junction arches.Based on in-situ investigations and theoretical studies,we have summarized typical forms of destruction and identified high stress and unrestricted support at both sides of junction arch as its main causes.In this study,we also presented double-directional control bolt support technology for a large Y-type span intersection,applied to deep intersection engineering in the Jiahe Coal Mine,which has proved effective. | GUO, Zhibiao SHI, Jianjun WANG, Jiong CAI, Feng WANG, Fuqiang | 2010 | Mining Science and Technology2010，20，2： | 12 |
| 6 | Chang'E-1 Lunar Mission:An Overview and Primary Science Results显示文摘Chang'E-1 is the first lunar mission in China,which was successfully launched on Oct.24th,2007.It was guided to crash on the Moon on March 1,2009,at 52.36°E,1.50°S,in the north of Mare Fecunditatis.The total mission lasted 495 days,exceeding the designed life-span about four months.1.37Terabytes raw data was received from Chang'E-1.It was then processed into 4Terabytes science data at different levels.A series of science results have been achieved by analyzing and applicating these data,especially 'global image of the Moon of China's first lunar exploration mission'.Four scientific goals of Chang'E-1 have been achieved.It provides abundant materials for the research of lunar sciences and cosmochemistry.Meanwhile these results will serve for China's future lunar missions. | Ouyang Ziyuan Li Chunlai Lu Chang Liu Jianzhong Zou Yongliao Zhang Hongbo Jianjun Zuo Wei Su Yah Wen Weibin Bian Wei Zhao Baochang Wang Jianyu Yang Jianfeng Chang Jin Wang Huanyu Zhang Xiaohui Wang Shijin Wang Min Ren Xin Mu Lingli Kong Deqing Wang Xiaoqian Wang Fang Geng Liang Zhang Zhoubin Zheng Lei Zhu Xinying Zheng Yongchun Li Junduo Zou Xiaoduan Xu Chun Shi Shuobiao Gao Yifei Gao Guannan | 2010 | 空间科学学报2010，30，5： | 11 |
| 7 | Coupling Rice with Fish for Sustainable Yields and Soil Fertility in China显示文摘About 30 million hectares of rice are cultivated annually in China(FAOSTAT,2019).Because most rice fields are wellirrigated and suitable for fish living(‘fish’here refers to various aquatic animals like carps,prawns,crabs,soft shell turtles,etc.)(Fernando,1993),many efforts have been made to determine how well rice farming and aquaculture can be coupled as a rice-fish system(RFS),of which the same land and water produces both rice and aquatic products.With the technological guidance of RFSs and political supports from the Ministry of Agriculture and Rural Affairs of China since 2010(Supplemental Table 1),multiple types of large-scale,high-efficiency and technologically intensive RFSs are now being demonstrated in the main rice-growing areas of China(National Fisheries Technology Extension Centre,2019),and in total about 1.2 million hectares of rice fields are under RFSs. | GUO Liang HU Liangliang ZHAO Lufeng SHI Xiaoyu JI Zijun DING Lilian REN Weizheng ZHANG Jian TANG Jianjun CHEN Xin | 2020 | Rice science2020，27，3： | 11 |
| 8 | Enhanced anti-sunward flow near local noon during a period of horizontal IMF and high solar wind velocity V_Y显示文摘It is believed that a southward interplanetary magnetic field (IMF) is mainly responsible for the energy input from solar wind into the magnetosphere.This paper presents an unusual case of strong anti-sunward plasma flow (up to 2 km/s) in the polar cap ionosphere and large cross-polar cap potential (CPCP) during a period of horizontal IMF (|BZ| < 2 nT) observed by both ACE (at the L1 point) and Geotail (on the dusk flank of the magnetosheath).The CPCP is even higher than that under preceding BZ ≈-23 nT.Furthermore,GOES8 observed that the magnetosheath field turns northward as the anti-sunward plasma flow and CPCP start to increase,which implies that the magnetosheath field interacting with the Earth's magnetopause has significantly rotated and differs from the IMF observed by ACE and Geotail.In accordance with previous theoretical work,we suggest that the magnetic field line draping produces a southward magnetosheath field and enhances anti-sunward plasma flow and the CPCP. | WEI Yong ZONG QiuGang PU ZuYin WAN WeiXing LIU JianJun FU SuiYan SHI QuanQi | 2011 | Chinese Science Bulletin2011，56，11： | 7 |
| 9 | (+)-/(-)-Angelignanine,a pair of neolignan enantiomers with an unprecedented carbon skeleton from an aqueous extract of the Angelica sinensis root head显示文摘A pair of neolig nan enan tiomers with an unprecedented carb on skelet on,(+)-/(-)-angeligna nine[(+)-/(-)-1].was isolated as minor components of an aqueous extract of the Angelica sinensis root heads(guitou).Their structures were determined by spectroscopic data analysis and the absolute configurations were assigned by the circular dichroism(CD)exciton chirality method as well as electronic CD quantum calculations.The enantiomers represent the first 2,7/-cyclo-8,9z-neolignans,of which biosynthetic pathways originating from precursors ferulic acid and coniferyl alcohol is proposed.In an in vivo test,both the enantiomers showed significant hypnotic effects at a dose of 10 mg/kg(i.g.). | Youzhe Chen Qinglan Guo Chengbo Xu Chenggen Zhu Jianjun Zhang Jiangong Shi | 2021 | Chinese Chemical Letters2021，32，5： | 7 |
| 10 | Turbidite and bottom-current evolution revealed by anisotropy of magnetic susceptibility of redox sediments in the Ulleung Basin,Sea of Japan显示文摘Anisotropy of magnetic susceptibility(AMS) from above and below 7.31 m in a core from the southern Ulleung Basin shows clear differences on an equal area projection of the lower hemisphere.Rather concentrated steep inclination of K 3 and horizontal inclination of K 1 and K 2(K1 ≥K2 ≥K3) are located within the upper part,and the latter two axes lie perpendicular to each other near the bedding plane.In contrast,random distribution of the three axes and extremely high value of shape parameters(Q=(K1-K2)/[(K1+K2)/2-K3]) are evident in the lower part,indicating complete destruction of the original sedimentary structure.This result is consistent with data from X-radiographs,which show numerous conglomerates,distortions and cleavages in the lower part.According to age models by Liu et al.(2010) and Zou et al.(2010),the bottom age at 7.31 m is 48 cal ka BP,and the time domain is discussed below.The degree of AMS(P) is low,1-1.08,and linearly related to the foliation(F)(R2 =0.95,N=176).The relationship between F and linearity(L) implies oblate aligning patterns that are typically sedimentary in origin.At least five redox couplets were found with the aid of S ratios and other rock magnetic parameters,and in most cases,the original signals of climate survived early diagenesis.The paleomagnetically reoriented AMS show corresponding changes with millennial events in the last 48 cal ka.Clearly tilted K 3 directions and reduction of P and F occurred within DO1-BA warm events,when melt water pulse 1A nd the YD cold event took place.The turbulent conditions therein,synchronous with coarsening of sediments,provide evidence of strong bottom currents and possible directional changes,as evidenced by different K3 tilting directions.A NE current direction in the last 4.5 cal ka is consistent with in situ measurements of bottom currents.Responses of AMS,mainly to climatic modulation,show on the one hand,the limited influence of diagenesis on rock magnetic signals and,on the other hand,the dramatic change of hydrodynamic conditions and terrigenous inputs during rapid sea level rise during the last deglaciation. | GE ShuLan SHI XueFa LIU YanGuang WANG KunShan ZOU JianJun DIAO JingYu ZHU ZhiWei WANG ChunJuan | 2012 | Chinese Science Bulletin2012，57，6： | 7 |
| 11 | Efficacy of platinum in advanced triple-negative breast cancer with germline BRCA mutation determined by next generation sequencing显示文摘Objective:To compare the efficacy of platinum-and non-platinum-based regimens as first-line treatment for advanced triple-negative breast cancer(TNBC)and analyze the relationship between their efficacy and BRCA gene status.Methods:Retrospectively analyze clinical data of 220 patients diagnosed pathologically with advanced TNBC and treated at the Department of Breast Oncology,Peking University Cancer Hospital from 2013 to 2018 and evaluate the efficacy of chemotherapy.A total of 114 patients had BRCA1/2 gene tested by next generation sequencing(NGS)using peripheral blood,and we analyzed the correlation between their efficacy and BRCA1/2 gene status.Results:Non-platinum-based chemotherapy(NPCT)was administered to 129 and platinum-based chemotherapy(PBCT)to 91 study patients.The clinical benefit rate(CBR)and median progression-free survival(PFS)were not statistically different between NPCT and PBCT groups.The median overall survival(OS)was 30.0 and 22.5 months for PBCT and NPCT group,respectively[P=0.090,hazard ratios(HR)=0.703].BRCA status was assessed in 114 patients,14 of whom had deleterious germline BRCA1/2(g BRCA)mutations(seven in each group).In PBCT group,the CBR was 85.7%and 35.1%for patients with and without deleterious g BRCA mutations,respectively(P=0.039).The median PFS were 14.9 and 5.3 months and median OS were 26.5 and 15.5 months for patients with and without deleterious g BRCA mutations,respectively(P=0.001,P=0.161,respectively).Patients in PBCT group had significantly greater rates of grade 3-4 anemia(5.5%vs.0%)and thrombocytopenia(8.8%vs.0%),whereas palmar-plantar erythrodysesthesia(12.4%vs.0%)and peripheral neuropathy(8.6%vs.1.1%)occurred more frequently in NPCT group.Conclusions:Platinum-based regimens are more effective in patients with deleterious g BRCA mutations,but no difference in patients without BRCA gene mutations,so non-platinum is an option in patients without BRCA gene mutations considering the toxicity and side effect.And we recommend that patients with advanced TNBC should have BRCA gene test. | Nan Wang Kun Li Wenfa Huang Weiyao Kong Xiaoran Liu Weijie Shi Feng Xie Hanfang Jiang Guohong Song Lijun Di Quanren Wang Jianjun Yu Huiping Li | 2020 | Chinese Journal of Cancer Research2020，32，2： | 7 |
| 12 | Co-seismic Faults and Geological Hazards and Incidence of Active Fault of Wenchuan Ms 8.0 Earthquake,Sichuan,China显示文摘There are two co-seismic faults which developed when the Wenchuan earthquake happened. One occurred along the active fault zone in the central Longmen Mts.and the other in the front of Longmen Mts.The length of which is more than 270 km and about 80 km respectively.The co-seismic fault shows a reverse flexure belt with strike of N45°-60°E in the ground,which caused uplift at its northwest side and subsidence at the southeast.The fault face dips to the northwest with a dip angle ranging from 50°to 60°.The vertical offset of the co-seismic fault ranges 2.5-3.0 m along the Yingxiu-Beichuan co-seismic fault,and 1.5-1.1 m along the Doujiangyan-Hanwang fault.Movement of the coseismic fault presents obvious segmented features along the active fault zone in central Longmen Mts. For instance,in the section from Yingxiu to Leigu town,thrust without evident slip occurred;while from Beichuan to Qingchuan,thrust and dextral strike-slip take place.Main movement along the front Longmen Mts.shows thrust without slip and segmented features.The area of earthquake intensity more thanⅨdegree and the distribution of secondary geological hazards occurred along the hanging wall of co-seismic faults,and were consistent with the area of aftershock,and its width is less than 40km from co-seismic faults in the hanging wall.The secondary geological hazards,collapses,landslides, debris flows et al.,concentrated in the hanging wall of co-seismic fault within 0-20 km from co-seismic fault. | MA Yinsheng LONG Changxing TAN Chengxuan WANG Tao GONG Mingquan LIAO Chunting WU Manlu SHI Wei DU Jianjun PAN Feng | 2009 | Acta Geologica Sinica(English Edition)2009，83，4： | 7 |
| 13 | Electrical transport properties of Fe Se single crystal under high magnetic field显示文摘Understanding the normal electronic state is crucial for unveiling the mechanism of unconventional superconductivity(SC). In this paper, by applying a magnetic field of up to 37T on FeSe single crystals, we could reveal the normal-state transport properties after SC was completely suppressed. The normal-state resistivity exhibited a Fermi liquid behavior at low temperatures. Large orbital magnetoresistance(MR) was observed in the nematic state with H//c, whereas MR was negligible with H//ab. The magnitude of the orbital MR showed an unusual reduction, and Kohler’s rule was severely violated below 10-25 K;these were attributable to spin fluctuations. The results indicated that spin fluctuations played a paramount role in the normalstate transport properties of FeSe albeit the Fermi liquid nature was at low temperature. | HongHui Wang ZhaoHui Cheng MengZhu Shi DongHui Ma WeiZhuang Zhuo ChuanYing Xi Tao Wu JianJun Ying XianHui Chen | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，8： | 6 |
| 14 | Adsorption of platinum(Ⅳ)onto D301R resin显示文摘磅(IV ) 是 D301R 树脂在 pH = 的媒介吸附的份量上 3.47。静态地浸透的吸附能力是 410 mg/g。在 D301R 树脂上吸附的磅(IV ) 能是由 1.0-2.0 mol/L NaOH 的 eluted。率常数是 k298 = 5. | MO Jianjun SHI Linmei GU Yongbing YAN Guobing | 2008 | Rare Metals2008，27，3： | 6 |
| 15 | Fabrication of room temperature continuous-wave operation GaN-based ultraviolet laser diodes显示文摘Two kinds of continuous-wave GaN-based ultraviolet laser diodes(LDs) operated at room temperature and with different emission wavelengths are demonstrated.The LDs epitaxial layers are grown on GaN substrate by metalorganic chemical vapor deposition,with a 10 × 600 μm^2 ridge waveguide structure.The electrical and optical characteristics of the ultraviolet LDs are investigated under direct-current injection at room temperature.The stimulated emission peak wavelength of first LD is 392.9 nm,the threshold current density and voltage is 1.5kA/cm^2 and 5.0 V,respectively.The output light power is 80 mW under the 4.0 kA/cm^2 injection current density.The stimulated emission peak wavelength of second LD is 381.9 nm,the threshold current density the voltage is2.8 kA/cm^2 and 5.5 V,respectively.The output light power is 14 mW under a 4.0 kA/cm^2 injection current density. | Degang Zhao Jing Yang Zongshun Liu Ping Chen Jianjun Zhu Desheng Jiang Yongsheng Shi Hai Wang Lihong Duan Liqun Zhang Hui Yang | 2017 | Journal of Semiconductors2017，38，5： | 6 |
| 16 | Umbilical cord-derived mesenchymal stem cells retain immunomodulatory and anti-oxidative activities after neural induction显示文摘The immunomodulatory and anti-oxidative activities of differentiated mesenchymal stem cells contribute to their therapeutic efficacy in cell-replacement therapy. Mesenchymal stem cells were isolated from human umbilical cord and induced to differentiate with basic fibroblast growth factor, nerve growth factor, epidermal growth factor, brain-derived neurotrophic factor and forskolin. The mesenchymal stem cells became rounded with long processes and expressed the neural markers, Tuj1, neurofilament 200, microtubule-associated protein-2 and neuron-specific enolase. Nestin expression was significantly reduced after neural induction. The expression of immunoregulatory and anti-oxidative genes was largely unchanged prior to and after neural induction in mesenchymal stem cells. There was no significant difference in the effects of control and induced mesenchymal stem cells on lymphocyte proliferation in co-culture experiments. However, the expression of human leukocyte antigen-G decreased significantly in induced neuron-like cells. These results suggest that growth factor-based methods enable the differentiation of mesenchymal stem cell toward immature neuronal-like cells, which retain their immunomodulatory and anti-oxidative activities. | Jianjun Li Dong Li Xiuli Ju Qing Shi Dakun Wang Fengcai Wei | 2012 | Neural Regeneration Research2012，7，34： | 5 |
| 17 | Highly pathogenic avian influenza H5N1 Clade 2.3.2.1c virus in migratory birds,2014–2015显示文摘A novel Clade 2.3.2.1c H5N1 reassortant virus caused several outbreaks in wild birds in some regions of China from late 2014 to 2015.Based on the genetic and phylogenetic analyses,the viruses possess a stable gene constellation with a Clade 2.3.2.1c HA,a H9N2-derived PB2 gene and the other six genes of Asian H5N1-origin.The Clade 2.3.2.1c H5N1 reassortants displayed a high genetic relationship to a human H5N1 strain(A/Alberta/01/2014).Further analysis showed that similar viruses have been circulating in wild birds in China,Russia,Dubai(Western Asia),Bulgaria and Romania(Europe),as well as domestic poultry in some regions of Africa.The affected areas include the Central Asian,East Asian-Australasian,West Asian-East African,and Black Sea/Mediterranean flyways.These results show that the novel Clade 2.3.2.1c reassortant viruses are circulating worldwide and may have gained a selective advantage in migratory birds,thus posing a serious threat to wild birds and potentially humans. | Yuhai Bi Jianjun Chen Zhenjie Zhang Mingxin Li Tianlong Cai Kirill Sharshov Ivan Susloparov Alexander Shestopalov Gary Wong Yubang He Zhi Xing Jianqing Sun Di Liu Yingxia Liu Lei Liu Wenjun Liu Fumin Lei Weifeng Shi George F. Gao | 2016 | Virologica Sinica2016，31，4： | 5 |
| 18 | High efficiency production of ginsenoside compound K by catalyzing ginsenoside Rb1 using snailase显示文摘The rare ginsenoside Compound K(C-K) is attracting more attention because of its good physiological activity and urgent need. There are many pathways to obtain ginsenoside C-K, including chemical and biological methods. Among these, the conversion of PPD-type ginsenosides by enzymatic hydrolysis is a trend due to its high efficiency and mild conditions. For effectively extracting from the other panaxadiol saponins, the conversion process for ginsenoside C-K was investigated using snailases in this study. The univariate experimental design and response surface methodology were used to determine the optimal hydrolysis conditions for the conversion of ginsenoside Rb1 into ginsenoside C-K by snailases. The optimum conditions were as follows: p H 5.12, temperature 51 °C, ratio of snailase/substrate 0.21, and reaction time 48 h. On the basis of these parameters, the addition of 1.0 mmol·L^(-1) ferric ion was found to significantly improve the enzymolysis of snailases for the first time. With the above conditions, the maximum conversion rate reached 89.7%, suggesting that the process can obviously increase the yield of ginsenoside C-K. The bioassay tests indicated that the ginsenoside C-K showed anti-tumor activity in a series of tumor cell lines. Based on these results, we can conclude that the process of rare ginsenoside CK production by enzymolysis with snailase is feasible, efficient, and suitable for the industrial production and application. | Zhiguang Duan Chenhui Zhu Jingjing Shi Daidi Fan Jianjun Deng Rongzhan Fu Rong Huang Cuiying Fan | 2018 | Chinese Journal of Chemical Engineering2018，26，7： | 5 |
| 19 | Effect of Stress and Galvanic Factors on the Corrosion Behave of Aluminum Alloy显示文摘The interaction between stress and galvanic during the corrosion process of 5050 aluminum alloys was studied and the evolution of mechanics properties was indicated. Electrochemical impedance technique and scanning electron microscopy were used to analyze the surface electrochemical states and the corrosion morphology. At the same time, corrosion kinetics and thermodynamic theory were used to analyze the influencing mechanism of the stress factor and the galvanic factor. The results show that both of galvanic factor and tensile stress factor can increase the corrosion potential of aluminum alloys and result in the corrosion resistance decrease. With decreasing corrosion resistance, the mechanical properties of aluminum alloys decrease. These phenomena are attributed to two reasons: One is that aluminum alloys may under the condition of anodic polarization after coupled with 40 Cr Ni Mo A steel, so the corrosion can be promoted; The other is that with increasing stress, the electrochemical potential of 5050 aluminum alloys decreases and the potential difference between two materials increases, so the corrosion becomes serious. Compared to the stress factor, the galvanic factor is significant. | 崔腾飞 刘道新 SHI Ping'an LIU Jianjun YI Yihui ZHOU Hongliang | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，3： | 5 |
| 20 | Investigation into the deformation of a large span roadway in soft seams and its support technology显示文摘We investigated the deformation failure mechanism of surrounding rock from the aspect of engineering support for a roadway in seams with soft roofs and soft floors and observed the large displacement of the roadway in these soft seams.The result shows that the deformation area is quite large,and settlement of the roof is evident and displacement of the side walls is also obvious.We considered rock bolt-cable coupling for roadway support in seams with soft roofs and floors,in which the cable should be fixed at key positions.As well,we designed an optimal scheme to support a roadway in soft seams of the Shizuishan Second Mine in Ningxia,China.Field monitoring results show that bolt-cable coupling support has achieved the aims of roadway stability control and minimizes deformation. | Fu Jianqiu Feng Chao Shi Jianjun | 2011 | Mining Science and Technology2011，21，4： | 5 |
您所在的机构暂未开通此部分的功能，请联系管理员