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| 1 | Linking atmospheric pollution to cryospheric change in the Third Pole region: current progress and future prospects显示文摘The Tibetan Plateau and its surroundings are known as the Third Pole(TP). This region is noted for its high rates of glacier melt and the associated hydrological shifts that affect water supplies in Asia. Atmospheric pollutants contribute to climatic and cryospheric changes through their effects on solar radiation and the albedos of snow and ice surfaces; moreover, the behavior and fates within the cryosphere and environmental impacts of environmental pollutants are topics of increasing concern. In this review, we introduce a coordinated monitoring and research framework and network to link atmospheric pollution and cryospheric changes(APCC) within the TP region. We then provide an up-to-date summary of progress and achievements related to the APCC research framework, including aspects of atmospheric pollution’s composition and concentration, spatial and temporal variations, trans-boundary transport pathways and mechanisms, and effects on the warming of atmosphere and changing in Indian monsoon, as well as melting of glacier and snow cover. We highlight that exogenous air pollutants can enter into the TP’s environments and cause great impacts on regional climatic and environmental changes. At last, we propose future research priorities and map out an extended program at the global scale. The ongoing monitoring activities and research facilitate comprehensive studies of atmosphere–cryosphere interactions, represent one of China’s key research expeditions to the TP and the polar regions and contribute to the global perspective of earth system science. | Shichang Kang Qianggong Zhang Yun Qian Zhenming Ji Chaoliu Li Zhiyuan Cong Yulan Zhang Junming Guo Wentao Du Jie Huang Qinglong You Arnico K.Panday Maheswar Rupakheti Deliang Chen Orjan Gustafsson Mark H.Thiemens Dahe Qin | 2019 | National Science Review2019，6，4： | 35 |
| 2 | Relationship between types of urban forest and PM_(2.5) capture at three growth stages of leaves显示文摘Particulate matter diameter ≤ 2.5 μm(PM2.5) causes direct harm to human health. Finding forms of urban forest systems that with the ability to reduce the amount of particulate matter in air effectively is the aim of this study. Five commonly cultivated kinds of urban forest types were studied in Beijing city at three stages of leaf growth. Results show that the urban forest system is capable of storing and capturing dust from the air. The types of shrubs and broadleaf trees that have the ability to capture PM2.5from the air are most effective when leaves have fully developed. In the leafless season, the conifer and mixed tree types are the most effective in removing dust from the air. For all kinds of forest types and stages of leaf growth, the PM2.5concentration is highest in the morning but lower in the afternoon and evening. Grassland cannot control particles suspended in the air,but can reduce dust pollution caused by dust from the ground blown by the wind back into the air. | Thithanhthao Nguyen Xinxiao Yu Zhenming Zhang Mengmeng Liu Xuhui Liu | 2015 | Journal of Environmental Sciences2015，27，1： | 30 |
| 3 | Non-coordination in China′s Urbanization: Assessment and Affecting Factors显示文摘Urbanization is a comprehensive concept,a trinity process that is based on the interactions and mutual influences among the population urbanization,economic urbanization and space urbanization,in which,people are the central and leading players in this process,while economic activities serve as the driving force and space is the carrier—the physical or material setting as well as the product.So the coordination among these processes is crucial for a country or region′s sustainable development.China is experiencing rapid growth of cities and a surge in urban population,with the basic national condition of many people and little land,which calls for a systematic study of the issue of coordinated urbanization from theoretical,methodological and practical perspectives.Based on the concept of urbanization and non-coordination of urbanization,this article built a quantitative method to identify and evaluate the urbanization and non-coordination of urbanization,and made an empirical analysis in China between 2000 and 2008.The results show that the non-coordination overall level of China′s urbanization declined during the study period,because population urbanization,economic urbanization,and space urbanization exhibited different trajectories of change.This study also reveals that performance assessment system,household registration system,and urban land expropriation system,etc.,are the main affecting factors.At the end,we put forward some suggestions to achieve sustainable development of China′s urbanization from the aspects of improving the local government′s objective function,implementing the urban planning system,enforcing public participation aspects and so on. | SUN Pingjun SONG Wei XIU Chunliang LIANG Zhenming | 2013 | Chinese Geographical Science2013，23，6： | 26 |
| 4 | The discovery of Palaeoproterozoic volcanic rocks in the Bulunkuoler Group from the Tianshuihai Massif in Xinjiang of Northwest China and its geological significance显示文摘In the Dabudaer region of the Tianshuihai Massif (Xinjiang, Northwest China), metavolcanic rocks within the mainly meta-sedimentary Bulunkuoler Group are basalt, basaltic andesite, and rhyolite. In situ zircon U-Pb LA-ICP-MS dating on rhyolite magmatic zircons yielded an age of 2481±14 Ma, interpreted as the eruption age of the Bulunkuoler Group volcanic rocks. The basalt and basaltic andesite are low-Al tholeiite series and the rhyolite is low-Al calc-alkaline series. All of rocks are charac-terized by enrichment of LREE and LILE (Rb, Th and Ba), depletion of P, Nb, Ta and Ti, and absence of Eu anomalies. The εNd(t) of basalts ranges from 3.14 to 4.88 indicating a depleted mantle source. The trace element signatures show that these magmas experienced intense crustal contamination during their ascent. Direct evidence for crustal contamination is the xenocrystic zircons in the ryholite, with ages back to ca. 3300 Ma. The primitive-mantle normalized and Zr/Y-Zr diagrams for the basic volcanic rocks show that they formed in an intra-continental tectonic setting. Combined with the previous studies and compared with North China Craton Neoarchean basic volcanic rocks, it is supposed that the Bulunkuoler Group volcanic rocks reflect the Palaeoproterozoic mantle magma underplating and interaction with felsic crust. | JI WenHua LI RongShe CHEN ShouJian HE ShiPing ZHAO ZhenMing BIAN XiaoWei ZHU HaiPing CUI JiGang REN JuanGang | 2011 | Science China Earth Sciences2011，54，1： | 22 |
| 5 | Hermetia illucens larvae as a potential dietary protein source altered the microbiota and modulated mucosal immune status in the colon of finishing pigs显示文摘Background: Insects, such as Hermetia illucens larvae, are rich in chitin and proteins, and represent a suitable feed ingredient replacement for animals. However, little is known about the effect of administering H. illucens larvae on intestinal microbiota, bacterial metabolite profiles, and mucosal immune status in animals. This study aimed to investigate the effects of administering H. illucens larvae on colonic microbiota and bacterial metabolites production in finishing pigs. Seventy-two crossbred(Duroc × Landrace × Large White) female pigs(initial body weight, 76.0 ± 0.52 kg) were randomly allocated to three different dietary treatments: a control diet(Control group) and two diets corresponding to 4%(H1 group) and 8%(H2 group) H. illucens larvae inclusion levels, respectively. Each treatment consisted of eight pens(replicates), with three pigs per pen. After 46 days of feeding, eight pigs per treatment(n =8) were slaughtered, and the colonic digesta and mucosa were collected for microbial composition and microbial fermentation products, and genes expression analyses.Results: The results showed that the H1 diet significantly increased the abundance of Lactobacillus,Pseudobutyrivibrio, Roseburia, and Faecalibacterium compared with those in the control group(P < 0.05), with a decrease in the abundance of Streptococcus. The numbers of Lactobacillus, Roseburia, and Clostridium cluster XIVa were significantly greater in the H1 group than in the control group(P < 0.05). Meanwhile, H2 diet increased the number of Clostridium cluster XIVa compared with the control group(P < 0.05). For colonic metabolites, total short chain fatty acids, butyrate, and isobutyrate concentrations were significantly higher in the H1 group than those in the control group(P < 0.05);the H1 treatment caused a striking decrease in protein fermentation compared with the control group, as the concentrations of total amines, cadaverine, tryptamine, phenol, p-cresol, and skatole were significantly lower(P < 0.05). Additionally, H2 diet also increased butyrate concentration compared with control group(P < 0.05), while decreased the concentrations of phenol, p-cresol, and skatole(P < 0.05). Pigs in the H1 group down-regulated the expression of TLR-4 and pro-inflammatory cytokines(IFN-γ) compared with pigs in the control group(P < 0.05), and up-regulated anti-inflammatory cytokine(IL-10) and intestinal barrier genes(ZO-1, occludin, and mucin-1). H2 diet up-regulated the expression of ZO-1 compared with control group(P < 0.05). Furthermore, the changes in the colonic mucosal gene expression were associated with changes in the bacterial composition and their metabolites.Conclusions: Collectively, dietary inclusion of Hermetia illucens larvae may enhance mucosal immune homeostasis of pigs via altering bacterial composition and their metabolites. These findings provide a new perspective on insect meal as a sustainable protein source rich in nutrient ingredients for swine. | Miao Yu Zhenming Li Weidong Chen Ting Rong Gang Wang Xianyong Ma | 2019 | Journal of Animal Science and Biotechnology2019，10，4： | 21 |
| 6 | Efficacy of Chinese herbal medicine for lumbar disc herniation: a systematic review of randomized controlled trials显示文摘OBJECTIVE: This is a review of the effects of Chinese herbal medicine(CHM) used alone to treat lumbar disc herniation(LDH). METHORDS: A literature search of the following electronic databases from their inception to February 2013 was conducted: Chinese Biomedical databases, Chinese National Knowledge Infrastructure, Wanfang Database, China Science and Technology Journal Database, Cochrane Library, Web of Science, MEDLINE, and EMBASE. Randomized controlled trials where CHM had been used to treat LDH were selected. Data extraction, quality assessment, and data analysis were carried out by two independent reviewers. RESULTS: Of the 2415 studies identified, eight with complete data on 1146 patients were selected. The methodological quality was poor in all trials. Five studies reported that CHM was better than Western Medicine [OR=2.81, 95% CI(1.27, 6.18); OR=3.34, 95% CI(1.92, 5.79); OR=2.22, 95% CI(1.08, 4.57); OR= 6.67, 95% CI(1.34, 33.28); and OR=1.94, 95% CI(1.23, 3.06)]. Two studies reported that the clinical outcome was better in CHM groups than in physiotherapy and placebo groups, [OR=3.02, 95% CI(1.08, 8.46); and OR=2.67, 95% CI(1.26, 5.64), respectively], whereas one study reported no difference between CHM and physiotherapy groups. One study reported that CHM resulted in higher Japanese Orthopedic Association scores [MD=7.78, 95% CI(6.67, 8.89)] than in a control group and another that participants treated with CHM had lower Visual Analogue Scale scores [MD=﹣0.72, 95% CI( ﹣0.86, ﹣0.58)] than those in a control group. Three studies reported that the adverse effects of CHM and Western Medicine did not differ significantly [OR=0.10, 95% CI(0.01, 1.85); OR=0.19, 95% CI(0.01, 4.07); and OR=0.07, 95% CI(0.00, 1.32)]. CONCLUSION: CHM may be more effective than other interventions for LDH; however, methodological weaknesses in the studies assessed in this review prevent a definitive conclusion. More high-quality large-scale studies are required to clarify this matter. | Yi Luo Jian Huang Lin Xu Weikang Zhao Jie Hao Zhenming Hu | 2013 | Journal of Traditional Chinese Medicine2013，33，6： | 15 |
| 7 | Effect of Saccharomyces cerevisiae on alfalfa nutrient degradation characteristics and rumen microbial populations of steers fed diets with different concentrate-to-forage ratios显示文摘Live yeast(Saccharomyces cerevisiae) constitutes an effective additive for animal production;its probiotic effect may be related to the concentrate-to-forage ratio(CTFR).The objective of this study was to assess the effects of S.cerevisiae(SC) on fiber degradation and rumen microbial populations in steers fed diets with different levels of dietary concentrate.Ten Simmental × Local crossbred steers(450 ± 50 kg BW) were assigned to a control group or an SC group.Both groups were fed the same basal diet but the SC group received SC supplementation(8 × 10~9 cfu/h/d through the ruminal fistula)following a two-period crossover design.Each period consisted of four phases,each of which lasted 17 d:10 d for dietary adaptation,6 d for degradation study,and 1 d for rumen sample collection.From the 1^(st) to the 4^(th) phase,steers were fed in a stepwise fashion with increasing CTFRs,i.e.,30:70,50:50,70:30,and 90:10.The kinetics of dry matter and fiber degradation of alfalfa pellets were evaluated;the rumen microbial populations were detected using real-time PCR.The results revealed no significant(P> 0.05) interactions between dietary CTFR and SC for most parameters.Dietary CTFR had a significant effect(P< 0.01) on degradation characteristics of alfalfa pellets and the copies of rumen microorganism;the increasing concentrate level resulted in linear,quadratic or cubic variation trend for these parameters.SC supplementation significantly(P< 0.05) affected dry matter(DM) and neutral detergent fiber(NDF)degradation rates(c_(DM),c_(NDF)) and NDF effective degradability(ED_(NDF)).Compared with the control group,there was an increasing trend of rumen fungi and protozoa in SC group(P < 0.1);copies of total bacteria in SC group were significantly higher(P< 0.05).Additionally,percentage of Ruminobacter amylophilus was significantly lower(P< 0.05)but percentage of Selenomonas ruminantium was significantly higher(P< 0.05) in the SC group.In a word,dietary CTFR had a significant effect on degradation characteristics of forage and rumen microbial population.S.cerevisiae had positive effects on DM and NDF degradation rate or effective degradability of forage;S.cerevisiae increased rumen total bacteria,fungi,protozoa,and lactate-utilizing bacteria but reduced starch-degrading and lactate-producing bacteria. | Gengzhi Ding Ying Chang Liping Zhao Zhenming Zhou Liping Ren Qingxiang Meng | 2014 | Journal of Animal Science and Biotechnology2014，5，4： | 15 |
| 8 | Different dietary starch sources alter the carcass traits, meat quality, and the profile of muscle amino acid and fatty acid in finishing pigs显示文摘Background: With increasing health awareness among consumers, the demand for healthier, tastier, higher quality and nutritional value pork is increasing. It has been shown that different dietary starch sources can alter the carcass traits and meat quality. However, research on the effects of different starch sources with clear different amylose/amylopectin ratio on the amino acid and fatty acid composition in Longissimus thoracis(L. thoracis) muscle of pigs is limited. This study aimed to investigate the effects of different dietary starch sources on carcass traits, meat quality, muscle amino acid and fatty acid composition, and the mRNA expression levels of genes involved in lipid metabolism and muscle fiber characteristics in finishing pigs. A total of 72 Duroc × Landrace × Large White barrows were randomly allocated to 3 different dietary treatment groups with 8 replicate pens/group and 3 pigs per pen.Tapioca starch(TS), corn starch(CS), and pea starch(PS), with amylose/amylopectin ratio of 0.11, 0.25, and 0.44,respectively, were used as their dietary starch sources for 40 days.Results: Results showed that the PS diet significantly increased(P < 0.05) the final body weight, average daily gain,loin-eye area, and fat-free lean index compared with the TS diet, but significantly decreased(P < 0.05) the feed to gain ratio and backfat thickness. Compared with the TS diet, PS diet also increased(P < 0.05) the pH45 min, marbling scores, the content of intramuscular fat and inosine monophosphate in the L. thoracis, and decreased(P < 0.05) the drip loss and shear force. In addition, compared with the TS diet, PS diet increased(P < 0.05) the proportions of flavor amino acids, DHA, EPA, and n-3 polyunsaturated fatty acid(PUFA) in the L. thoracis compared with TS diet,but decreased(P < 0.05) the ratio of n-6/n-3 PUFA. Furthermore, compared with the TS diet, PS diet also upregulated(P < 0.05) the lipogenic genes(FAS, LPL, SCD, ACCα) and myosin heavy-chain(MyHC)-IIa mRNA expression levels compared with the TS diet, but downregulated(P < 0.05) the CPT1 B and MyHC-IIb mRNA levels.Conclusions: In conclusion, these results provided compelling evidence that the different dietary starch source altered the carcass traits, meat flavor and quality in finishing pigs, and consumption of a diet with higher amylose/amylopectin ratio results in the production of a healthy, higher quality, and nutritional value pork. | Miao Yu Zhenming Li Ting Rong Gang Wang Zhichang Liu Weidong Chen Jiazhou Li Jianhao Li Xianyong Ma | 2021 | Journal of Animal Science and Biotechnology2021，12，1： | 13 |
| 9 | Marine Yeasts and Their Applications in Mariculture显示文摘The terrestrial yeasts have been receiving great attention in science and industry for over one hundred years because they can produce many kinds of bioactive substances. However, little is known about the bioactive substances of marine yeasts. In recent years, it has been found that marine yeasts have wide applications in mariculture and other fields. Therefore,marine yeasts, the bioactive substances from them and the applications of marine yeasts themselves and the bioactive substances they produced are reviewed in this paper. | CHI Zhenming LIU Zhiqiang GAO Lingmei GONG Fang MA Chunling WANG Xianghong LI Haifeng | 2006 | Journal of Ocean University of China2006，5，3： | 12 |
| 10 | Occurrence and Diversity of Marine Yeasts in Antarctica Environments显示文摘A total of 28 yeast strains were obtained from the sea sediment of Antarctica.According to the results of routine identi-fication and molecular characterization,the strains belonged to species of Yarrowia lipolytica,Debaryomyces hansenii,Rhodotorula slooffiae,Rhodotorula mucilaginosa,Sporidiobolus salmonicolor,Aureobasidium pullulans,Mrakia frigida and Guehomyces pullu-lans,respectively.The Antarctica yeasts have wide potential applications in biotechnology,for some of them can produce b-galactosidase and killer toxins. | ZHANG Xue HUA Mingxia SONG Chunli CHI Zhenming | 2012 | Journal of Ocean University of China2012，11，1： | 11 |
| 11 | Paleomagnetic results of Late Paleozoic rocks from northern Qiangtang Block in Qinghai-Tibet Plateau, China显示文摘Tectonic evolution of the Tethys and the boundary between the Gondwanaland and the Eurasia during the Carboniferous and Permian remain hotly debated. Qiangtang region in the Qinghai-Tibet Plateau may be a key place to study these problems. A paleomagnetic study was conducted on the Late Paleozoic rocks in the northern Qiangtang region (33.7°N, 86.7°W), Tibet. Two sites (21 samples) in the Upper Carboniferous, eleven sites (101 samples) in the Permian, and two sites (16 samples) in the Lower Triassic were investigated. The rock magnetic data revealed hematite and magnetite as the main magnetic carriers. In stepwise thermal demagnetization and/or combined alternating field (AC) demagnetization, two characteristic components in the majority of the samples were identified as (1) the Low-temperature Component (LTC), characterized by northerly decli- nation and moderate to steep inclination, corresponding to a pole position overlay with the present North Pole. A minority of the samples present single component, and their directions are the same as (2) the High-temperature Component (HTC) of double components. The combined single-component and HTC data of the Permian can pass the R-test at 95% level and the F-test at 99% level, as well as the BC-test. The pole position from the Late Carboniferous is at 31.8°S, 45.7°E with dp=2.1, dm=3.9, that from the Early and Middle (Late) Permian is at 31.7°S, 46.8°E with dp=9.2, dm=16.9 (34.4°N, 54.1°E with dp=6.9, dm=12.5) respectively, and that from the Early Triassic is at 16.9°S, 22.5°E with dp=4.9, dm=9.2. These pole positions are different from the other poles for the Qiangtang Block, which suggests the single-component and HTC directions are probably a primary magnetization and the northern Qiangtang Block was paleogeographically situated at low latitudes in the Northern Hemisphere in the Late Paleozoic. | CHENG Xin WU HanNing GUO Qiang HOU BaoNing XIA LingYan WANG HaiJun DIAO ZongBao HUO FeiFei JI WenHua LI RongShe CHEN ShouJian ZHAO ZhenMing LIU XiaoJi | 2012 | Science China Earth Sciences2012，55，1： | 9 |
| 12 | Sustainability analysis of the urban ecosystem in Guangzhou City based on information entropy between 2004 and 2010显示文摘城市的生态系统拥有驱散能从外部环境和出口产品和浪费吸收物质和精力在系统以内维持顺序的结构。给这些情形,这份报纸在广州城市里分析了城市的生态系统的能力从熵的观点支撑开发。研究在三步被执行。首先,为持续开发考虑城市的生态系统的能力的一个评估索引系统在城市的社会经济的生态系统的熵基于城市的生态系统和变化的结构和功能被形成。第二,为城市的生态系统的持续发展能力评价模型用信息熵被造。由把评估指示物的时间系列变化与熵重量相结合,最后,这篇论文在广州在城市的生态系统的持续发展能力上分析了联合因素的影响并且建议了一些措施在广州支持城市的生态系统的持续发展。这研究的结论能如下被总结:(1 ) 城市的生态系统在一个有序、健康的方向发展了,与对在在 2004 和 2010 之间的广州的城市的环境污染问题的有效控制。(2 ) 城市的生态系统的持续发展能力在学习时期期间在在广州的一个向上的趋势上。到城市的社会经济的生态系统连续地增加了的支持的自然城市的生态系统的能力,和改进 ecoenvironment 在广州提高了城市的生态系统的和谐和活力。 | LIN Zhenming | 2013 | Journal of Geographical Sciences2013，23，3： | 9 |
| 13 | Paleomagnetic data from the Late Carboniferous-Late Permian rocks in eastern Tibet and their implications for tectonic evolution of the northern Qiangtang-Qamdo block显示文摘We report paleomagnetic results from the Late Carboniferous-Late Permian strata in eastern Tibet (China), and aim to clarify the tectonic and paleogeographic evolution of the northern Qiangtang-Qamdo block, which is the key to the study of plate boundary between the Gondwanaland and the Eurasia during the late Paleozoic. Two hundred and nineteen samples-including limestone, muddy siltstone, basalt, lava, and tuff-were collected at 24 sites in the Upper Carboniferous and Middle-Upper Permian successions. A systematic study of rock magnetism and paleomagnetism yields three reliable paleomagnetic pole positions. Both hematite and magnetite occurred in the Late Carboniferous limestone samples. The demagnetization curve shows a characteristic double-component, with the remanent magnetization (ChRM) exhibiting a positive polarity (negative inclination). In the Late Permian limestone, tuff, and basalt, magnetic information were recorded primarily in magnetite, although a small fraction of them was found in hematite in basalt. The demagnetization curve illustrates a double or single component, with the ChRM showing a negative polarity (positive inclination), which has passed the classic fold test successfully. The single polarity features of the ChRM directions of the Late Carboniferous and Middle-Late Permian rocks are respectively related to the Kiaman positive and reversed polarities under the stratigraphic coordinates. This, in turn, indicates that both ChRMs directions represent the original remanence directions. By comparison with the previously published paleomagnetic results from the late Paleozoic rocks in the northern Qiangtang Range, we suggest that: (1) Qamdo and northern Qiangtang block were independent of each other during the Late Carboniferous to the Early Permian periods. The north Lancangjiang ocean basin between the two blocks may have closed before the Middle Permian and been involved in the continent-continent collision stage in the Late Permian-Early Triassic periods. (2) The northern Qiangtang-Qamdo Block paleogeographically was situated at low to intermediate latitudes in the Southern Hemisphere in the Late Carboniferous-Late Permian periods, and began to displace northward in the Early Triassic, with an amount of more than 5000 km northward transport from its current location. | CHENG Xin WU HanNing DIAO ZongBao WANG HaiJun MA Lun ZHANG XiaoDong YANG Gang HONG JingJing JI WenHua LI RongShe CHEN ShouJian ZHAO ZhenMing | 2013 | Science China Earth Sciences2013，56，7： | 8 |
| 14 | Nitrogen reduction using bioreactive thin-layer capping(BTC)with biozeolite: A field experiment in a eutrophic river显示文摘Bioreactive thin-layer capping(BTC)with biozeolite provides a potential remediation design that can sustainably treat N contamination from sediment and overlying water in eutrophic water bodies.Nitrogen(N)reduction using BTC with biozeolite was examined in a field incubation experiment in a eutrophic river in Yangzhou,Jiangsu Province,China.The biozeolite was zeolite with attached bacteria,including two isolated heterotrophic nitrifiers(Bacillus spp.)and two isolated aerobic denitrifiers(Acinetobacter spp.).The results showed that the total nitrogen(TN)reduction efficiency of the overlying water by BTC with biozeolite(with thickness of about 2 mm)reached a maximum(56.69%)at day 34,and simultaneous heterotrophic nitrification and aerobic denitrification occurred in the BTC system until day 34.There was a significant difference in the TN concentrations of the overlying water between biozeolite capping and control(t-test;p<0.05).The biozeolite had very strong in situ bioregeneration ability.Carbon was the main source of nitrifier growth.However,both dissolved oxygen(DO)and carbon concentrations affected denitrifier growth.In particular,DO concentrations greater than 3 mg/L inhibited denitrifier growth.Therefore,BTC with biozeolite was found to be a feasible technique to reduce N in a eutrophic river.However,it is necessary to further strengthen the adaptability of aerobic denitrifiers through changing domestication methods or conditions. | Zhenming Zhou Tinglin Huang Baoling Yuan | 2016 | Journal of Environmental Sciences2016，28，4： | 8 |
| 15 | Comparison of dilution effects of R134a and nitrogen on flammable hydrofluorocarbons显示文摘An experimental apparatus has been built to measure the flammability limits of combustible gases based on Chinesenational standard GB/T 12474-90. The flammability limits of four binary mixtures of R161/R134a,R152a/R134a, R161/N2 and R152a/N2 were measured with this apparatus at atmospheric pressure and ambienttemperature. The fuel inertization points (FIP) of these mixtures can be found from the envelopes. Comparisonswere made with the literature data; good agreement for most measurements was obtained. R134a was found tohave a better dilution effect than nitrogen in reducing the flammability of hydrofluorocarbons. | Zhenming Li Maoqiong Gong Jianfeng Wu Yuan Zhou | 2009 | Journal of Thermal Science2009，18，4： | 7 |
| 16 | Intermediate Spoofing Strategies and Countermeasures显示文摘Intermediate spoofing can impact most off-the-shelf Global Navigation Satellite Systems(GNSS)receivers,therefore low cost detection of such spoofing is very important to protect the reliability of the GNSS receivers used in critical safety and financial applications.This paper presents two strategies to analyze attacks by intermediate spoofing attackers to identify the weaknesses of such attacks.The analyses lead to a code and carrier phase consistency detection method with simulation results showing that this method can indicate the receiver when spoofing has occurred.The method can be used by most receivers,is inexpensive,and requires only a small software upgrade. | Yang Gao Hong Li Mingquan Lu Zhenming Feng | 2013 | Tsinghua Science and Technology2013，18，6： | 7 |
| 17 | A Rapid Analysis Tool for Aerodynamics/Aerothermodynamics of Hypersonic Vehicles显示文摘A rapid engineering surface panel method to analyze aerodynamics and aerothermodynamics of hypersonic vehicles is developed.To obtain the surface pressure distribution of a hypersonic vehicle,the local surface inclination method is applied to calculate the pressure coefficient for each surface panel element,of which the normal vector is corrected first by using an efficient data structure and Rey-casting algorithm,local Reynolds numbers are calculated according to the geometric streamline method,then the aerodynamic heating flux is computed by both reference enthalpy relations and Reynolds analogy method.Several typical test cases are performed and the results indicate that,the developed tool is effective in predicting the aerodynamics/aerothermodynamics for complex geometry of hypersonic vehicle in a wide range of Mach numbers with a sufficient accuracy. | Li Zhengzhou Xiao Tianhang Lü Fanxi Yu Xiongqing Zhang Zhenming Du Sha | 2017 | Transactions of Nanjing University of Aeronautics and Astronautics2017，34，4： | 7 |
| 18 | Bioflocculant Produced by Klebsiella sp. MYC and Its Appli-cation in the Treatment of Oil-field Produced Water显示文摘Seventy-nine strains of bioflocculant-producing bacteria were isolated from 3 activated sludge samples. Among them, strain MYC was found to have the highest and stable flocculating rate for both kaolin clay suspension and oil-field produced water. The bacterial strain was identified as Klebsiella sp. MYC according to its morphological and biochemical characteristics and 16S rDNA sequence. The optimal medium for bioflocculant production by this bacterial strain was composed of cane sugar 20 g L -1, KH2PO4 2 g L -1, K2HPO4 5 g L -1, (NH4)2SO4 0.2 g [KG-*9]L -1, urea 0.5 g L -1 and yeast extract 0.5 g L -1, the initial pH being 5.5. When the suspension of kaolin clay was treated with 0.5% of Klebsiella sp. MYC culture broth, the flocculating rate reached more than 90.0% in the presence of 500 mg L -1 CaCl2, while the flocculating rate for oil-field produced water was near 80[KG-*3].0% in a pH range of 7.0-9.0 with the separation of oil and suspended particles from the oil-field produced water under similar conditions. The environment-friendly nature of the bioflocculant and high flocculating rate of the strain make the bioflocculant produced by Klebsiella sp. MYC an attractive bioflocculant in oil-field produced water treatment. | YUE Lixi MA Chunling CHI Zhenming | 2006 | Journal of Ocean University of China2006，5，4： | 7 |
| 19 | Tensile Properties and Deformation Behaviors of a New Aluminum Alloy for High Pressure Die Casting显示文摘Effects of natural aging and test temperature on the tensile behaviors have been studied for a highperformance cast aluminum alloy Al–10Si–1.2Cu–0.7Mn. Based on self-strengthening mechanism and spheroidization microstructures, the alloy tested at room temperature(RT) exhibits higher 0.2% proof stress(YS) of 206 MPa, ultimate tensile strength(UTS) of 331 MPa and elongation of 10%. Increasing aging time improves the YS and UTS and reduces the ductility of the alloy. Further increasing aging time beyond72 h does not signi?cantly increase the tensile strengths. Increasing test temperature signi?cantly decreases the tensile strengths and increases the ductility of the alloy. The UTS of the alloy can be estimated by using the hardness. The Portevin–Le Chatelier effect occurs at RT due to the interactions between solid solution atoms and dislocations. Similar behaviors occurring at 250 °C are attributed to dynamic strain aging mechanism. Increasing aging time leads to decrease in the strain-hardening exponent(n) value and increase in the strain-hardening coe?cient(k) value. Increasing test temperature apparently decreases the n and k values. Eutectic phase particles cracking and debonding determine the fracture mechanism of the alloy. Final failure of the alloy mainly depends on the global instability(high temperature, necking) and local instability(RT, shearing). Different tensile behaviors of the alloy are mainly attributed to different matrix strengths, phase particle strengths and damage rate. | Peng Zhang Zhenming Li Baoliang Liu Wenjiang Ding | 2017 | Journal of Materials Science & Technology2017，33，4： | 7 |
| 20 | Hydrochlorination of Acetylene Using SiC Foam Supported Structured C/Au Catalysts显示文摘AUCI_3 loaded structured catalysts were prepared on SiC foam supported with pre-coated activated carbon layers.The catalytic properties of the structured catalysts towards hydrochlorination of acetylene were tested in a fixedbed reactor with the AuCI_3 loaded on activated carbon pellets as a reference.For isopyknic catalysts,the structured catalyst with only one fifth of the Au amount as that was used on the reference catalyst exhibited even a little higher acetylene conversion and much better stability than the latter no matter what the gas hourly space velocities of acetylene were used.The results indicated that the more homogeneous distribution of AUCI_3 particles and better heat transfer along the fixed-bed reactor originated from the low pressure drop and high thermal conductivity of the SiC foam supported structured catalysts might be able to account for their improved efficiency and stability.It is believed that these novel structured C/Au catalysts can be potentially applied in VCM industrialization in view of their greatly reduced cost and much prolonged life. | Xiaodan Yang Chunhai Jiang Zhenming Yang Jinsong Zhang | 2014 | Journal of Materials Science & Technology2014，30，5： | 6 |
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