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International Journal of Minerals,Metallurgy and Materials 2014年第9期21卷 898-905页

作者： de-jun kong Cun-dong Ye College of Mechanical Engineering Changzhou University

The surfaces of X80 pipeline steel welded joints were processed with a CO2 laser, and the effects of laser heat treatment （LHT） on H2S stress corrosion in the National Association of Corrosion Engineers （NACE） solution were analyzed by a slow strain rate test. The fracture morphologies and chemical components of corrosive products before and after LHT were analyzed by scanning electron microscopy and energy-dispersive spectroscopy, respectively, and the mechanism of LHT on stress corrosion cracking was discussed. Results showed that the fracture for welded joints was brittle in its original state, while it was transformed to a ductile fracture after LHT. The tendencies of hydrogen-induced corrosion were reduced, and the stress corrosion sensitivity index decreased from 35.2% to 25.3%, indicating that the stress corrosion resistance of X80 pipeline steel welded joints has been improved by LHT.

关键词： pipeline steel welded joints laser heating stress corrosion fracture morphology

Friction and wear properties of AlCrN coating by cathodic arc ion plating

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Rare Metals 2021年第5期40卷 1300-1306页

作者： de-jun kong Gui-Zhong Fu Lei Zhang Wen-Chang Wang College of Mechanical Engineering Changzhou UniversityChangzhou 213164China School of Petrochemical Engineering Changzhou UniversityChangzhou 213164China

AlCrN coating was prepared on the surface of TiC-based cermet cutting tool with cathodic arc ion plating,and the surface-interface morphologies,compositions of chemical elements,and phases were analyzed by scanning electron microscope(SEM),energy dispersive spectrometer(EDS),and X-ray diffraction(XRD),*** strength of the coating-substrate interface was measured with scratching test,and the wear mechanism and friction coefficient of TiC-based cermet cutting tool and AlCrN coating were investigated with friction and wear testing *** results show that the interface binding of AlCrN coating is metallurgical mode,and its binding strength is 83 *** average friction coefficient of TiC-based cermet cutting tool under the load of 6 N is 0.8409,while that under the load of 8 N decreases by about 11%,and the wear mechanism of TiC cermet cutting tool is fatigue wear,abrasive wear,and oxidation *** average friction coefficient of AlCrN coating is 0.6363 under the load of 6 N,and the change is relatively stable,decreasing by about 25%than that of TiC-based cermet cutting tool;when the load increases to 8 N,the average friction coefficient of AlCrN coating decreases by 9%.The wear mechanism of AlCrN coating is abrasive wear and oxidation wear,showing lower friction coefficient and good wear resistance.

关键词： TiC-based cermet cutting tool AlCrN coating Bonding strength Friction coefficient Wear performance

Ongoing green peafowl protection in China

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Zoological Research 2019年第6期40卷 580-582页

作者： Fei Wu de-jun kong Peng-Fei Shan Jie Wang Gladys Nyakeru Kungu Guang-Yi Lu Xiao-jun Yang State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunming Yunnan 650223China College of Agronomy and Life Sciences Kunming UniversityKunming Yunnan 650214China Kunming College of Life Science University of Chinese Academy of SciencesKunming Yunnan 650204China Henan University of Urban Construction Pingdingshan Henan 467036China

deAR EDITOR,The green peafowl (Pavo muticus) is one of the most threatened pheasants in the world. In China, it is widely appreciated for its beauty as well as historical and cultural value, but current populations number less than 500 individuals. Recently, Tang and colleagues reported in Science that the green peafowl is likely to become extinct due to the construction of the Jiasajiang Level 1 Hydropower Station within the Red River Upstream District (RRUD) and thus called for a stop to this project (Tang et al., 2019). According to our recent surveys, however, this species is still extant in 22 counties of Yunnan Province, China, among which, only two within the RRUD have been predicted to be affected by floods from the hydropower station. Therefore, the conclusion that the species will likely go extinct in China upon completion of the dam is unwarranted. In fact, construction of the Jiasajiang Level 1 Hydropower Station was stopped in August 2017. The main challenge for green peafowl conservation is that over 65% of the population occurs outside of protected reserves in China. Fortunately, the Chinese government has adopted an Ecological Redline (ERL) strategy to achieve ecological civilization plans, thus bringing new hope to the conservation of green peafowls both inside and outside of protected reserves. As a top conservation priority for China, the government is fully committed to conserving this peafowl.

关键词： green peafowl protection

Structural characteristics and high-temperature tribological behaviors of laser cladded NiCoCrAlY−B_(4)C composite coatings on Ti6Al4V alloy

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Transactions of Nonferrous Metals Society of China 2021年第9期31卷 2729-2739页

作者： Wen-chang WANG Jia-xing LI Yuan GE de-jun kong School of Petrochemical Engineering Changzhou UniversityChangzhou 213164China School of Mechanical Engineering Changzhou UniversityChangzhou 213164China Meltron Metal Surface Technology(Changzhou)Co. Ltd.Changzhou 213164China

In order to improve the hardness and tribological performance of Ti6Al4V alloy,NiCoCrAlY-B_(4)C composite coatings with B_(4)C of 5%,10%and 15%(mass fraction)were fabricated on its surface by laser cladding(LC).The morphologies,chemical compositions and phases of obtained coatings were analyzed using scanning electronic microscope(SEM),energy dispersive spectrometer(EDS),and X-ray diffraction(XRD),*** effects of B_(4)C mass fraction on the coefficient of friction(COF)and wear rate of NiCoCrAlY-B_(4)C coatings were investigated using a ball-on-disc wear *** results show that the NiCoCrAlY-B_(4)C coatings with different B_(4)C mass fractions are mainly composed of NiTi,NiTi_(2),α-Ti,CoO,AlB_(2),TiC,TiB and TiB_(2)*** COFs and wear rates of NiCoCrAlY-B_(4)C coatings decrease with the increase of B_(4)C content,which are contributed to the improvement of coating hardness by the B_(4)C *** wear mechanisms of NiCoCrAlY-B_(4)C coatings are changed from adhesive wear and oxidation wear to fatigue wear with the increase of B_(4)C content.

关键词： Ti6Al4V alloy laser cladding NiCoCrAlY coating B_(4)C tribological behavior wear

Metronomic capecitabine inhibits liver transplant rejection in rats by triggering recipients’T cell ferroptosis

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World Journal of Gastroenterology 2023年第20期29卷 3084-3102页

作者： Hao Wang Zheng-Lu Wang Sai Zhang de-jun kong Rui-Ning Yang Lei Cao Jian-Xi Wang Sei Yoshida Zhuo-Lun Song Tao Liu Shun-Li Fan Jia-Shu Ren Jiang-Hong Li Zhong-Yang Shen Hong Zheng The First Central Clinical School Tianjin Medical UniversityTianjin 300190China department of Organ Transplant Tianjin First Central HospitalSchool of MedicineNankai UniversityTianjin 300190China Key Laboratory of Transplant Medicine Chinese Academy of Medical SciencesTianjin 300190China School of Medicine Nankai UniversityTianjin 300190China Research Institute of Transplant Medicine Nankai UniversityTianjin 300071China Tianjin Key Laboratory for Organ Transplantation Tianjin First Central HospitalSchool of MedicineNankai UniversityTianjin 300071China National Health Commission’s Key Laboratory for Critical Care Medicine Tianjin First Central HospitalTianjin 300071China

BACKGROUND Capecitabine(CAP)is a classic antimetabolic drug and has shown potential antirejection effects after liver transplantation(LT)in clinical *** previous study showed that metronomic CAP can cause the programmed death of T cells by inducing oxidative stress in healthy ***,a newly defined non-apoptotic cell death that occurs in response to iron overload and lethal levels of lipid peroxidation,is an important mechanism by which CAP induces cell ***,ferroptosis may also play an important role in CAP-induced T cell death and play an immunosuppressive role in acute rejection after *** To investigate the functions and underlying mechanisms of antirejection effects of metronomic *** A rat LT model of acute rejection was established,and the effect of metronomic CAP on splenic hematopoietic function and acute graft rejection was evaluated 7 d after *** vitro,primary CD3+T cells were sorted from rat spleens and human peripheral blood,and co-cultured with or without 5-fluorouracil(5-FU)(active agent of CAP).The levels of ferroptosis-related proteins,ferrous ion concentration,and oxidative stress-related indicators were *** changes in mitochondrial structure were observed using electron *** With no significant myelotoxicity,metronomic CAP alleviated graft injury(Banff score 9 vs 7.333,Pdegradation of the ferritin heavy chain by upregulating nuclear receptor coactivator 4,which caused the accumulation of ferrous *** also inhibited nuclear erythroid 2 p45-related factor 2,heme oxygenase-1,and glutathione peroxidase 4,eventually leading to oxidati

关键词： Capecitabine Ferroptosis T Lymphocytes Immunosuppressive agents Graft rejection Liver transplantation

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中国黑颈鹤的迁徙研究:环志与回收

Zoological Research 2014年第S1期35卷 20-38页

作者：孔德军李凤山杨晓君中国科学院昆明动物研究所遗传资源与进化国家重点实验室中国云南昆明650223 昆明学院生命科学与技术系中国云南昆明650144 国际鹤类基金会美国威斯康辛巴拉布53913

该文对1985-2012年,近30年中国境内的黑颈鹤(Grus nigricollis)环志与回收记录进行了整理和汇总,以期弄清我国黑颈鹤迁徙研究的现状,并为各黑颈鹤保护、管理和研究机构提供丰富的黑颈鹤环志与回收记录。研究结果显示:我国共环志黑颈鹤个... 详细信息

该文对1985-2012年,近30年中国境内的黑颈鹤(Grus nigricollis)环志与回收记录进行了整理和汇总,以期弄清我国黑颈鹤迁徙研究的现状,并为各黑颈鹤保护、管理和研究机构提供丰富的黑颈鹤环志与回收记录。研究结果显示:我国共环志黑颈鹤个体94只,其中13只佩戴有卫星发射器;共计回收到环志黑颈鹤66只次,为27或28只黑颈鹤个体(其中2只个体彩环组合重复,并且在不同地点被观察到),回收率为28.72%或29.79%;越冬地的回收63只次,占95.45%。环志回收数据证明了黑颈鹤种群存在的东、中、西三条迁徙路线,即四川大若尔盖地区与滇东北黔西北一线、青海隆宝滩与滇西北纳帕海一线、青海西部和西藏中北部与西藏东南部和不丹一线。环志黑颈鹤揭示黑颈鹤的繁殖年龄为≥5年,未成年幼鹤的形态各方面指标皆小于成年鹤。环志之后的黑颈鹤个体野外存活的时间跨度平均为44±52个月(n=26),最短为1个月,最长231个月,即近20年。考虑到黑颈鹤在繁殖地环志的优势与在越冬地回收的优势,建议未来的迁徙研究工作可增加在黑颈鹤繁殖地环志的力度,同时加大在越冬地观察带环黑颈鹤个体的强度。未来环志工作中应当制定统一的黑颈鹤环志和形态测量标准、建立长期稳定的信息共享平台和交流机制。

关键词：黑颈鹤迁徙鸟类环志环志回收

黑颈鹤春秋季和日间迁徙行为策略:时机和进程

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Zoological Research 2014年第S1期35卷 181-188页

作者：孔德军钟兴耀杨君兴杨晓君中国科学院昆明动物研究所遗传资源与进化国家重点实验室云南昆明650223 昆明学院生命科学与技术系云南昆明650144 大山包黑颈鹤国家级自然保护区管理局云南昭通657000

2006年10月29日—2007年5月19日,于云南省大山包黑颈鹤国家级自然保护区对黑颈鹤(Grus nigricollis)越冬种群的春秋季和春季日间迁徙行为进行研究。结果表明:越冬的黑颈鹤种群稳定期为947只,最高1199只,90%个体的越冬时长为153天,最长为... 详细信息

2006年10月29日—2007年5月19日,于云南省大山包黑颈鹤国家级自然保护区对黑颈鹤(Grus nigricollis)越冬种群的春秋季和春季日间迁徙行为进行研究。结果表明:越冬的黑颈鹤种群稳定期为947只,最高1199只,90%个体的越冬时长为153天,最长为203天。越冬期间黑颈鹤种群数量呈现春秋迁徙期间的高峰期,说明大山包为黑颈鹤迁徙的中途停歇地和集散地。春季迁徙期间,黑颈鹤主要集成大于20只的群体(45.83%)于晴朗、轻风的天气开始迁徙,94.7%的个体于每日13:00之前开始迁徙,10:00—11:00为每日的迁徙高峰时段。春季迁徙期,随温度上升每日迁徙的黑颈鹤比例上升(r=0.709),迁徙群体也呈增大趋势(r=1.000),并且起始迁徙时间显著提前(r=–1.000)。随着日期的推移黑颈鹤每日迁徙的比例显著升高(r=0.854,n=6,P=0.031),表明黑颈鹤迁徙具有自我催促机制,而迁徙过程受到强风和多云天气的负影响。

关键词：黑颈鹤大山包保护区迁徙行为环境因子时机

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大若尔盖湿地黑颈鹤的数量和分布

Zoological Research 2014年第S1期35卷 134-138页

作者：刘强王凯李凤山孔德军杨晓君西南林业大学/国家高原湿地研究中心中国云南昆明650224 中国科学院昆明动物研究所遗传资源与进化国家重点实验室中国云南昆明650223 国际鹤类基金会威斯康星巴拉市53913美国

掌握物种的分布和数量对濒危物种的保护和管理至关重要。2009年6月和7月采用样点法对大若尔盖湿地(四川省的若尔盖县、红原县和阿坝县,以及甘肃省的玛曲县和碌曲县)黑颈鹤(Grus nigricollis)的种群数量进行了调查。共设置调查样点95个,... 详细信息

掌握物种的分布和数量对濒危物种的保护和管理至关重要。2009年6月和7月采用样点法对大若尔盖湿地(四川省的若尔盖县、红原县和阿坝县,以及甘肃省的玛曲县和碌曲县)黑颈鹤(Grus nigricollis)的种群数量进行了调查。共设置调查样点95个,记录到黑颈鹤728只。在所调查的5个县中,若尔盖县所发现的黑颈鹤数量最多(586只),其次是玛曲县(80只)、碌曲县(31只)和红原县(31只),而阿坝县未发现黑颈鹤。若尔盖县境内的热尔大坝中的花湖—错热洼坚—哈丘错干湖泊湿地,玛曲的曼日玛—采日玛湿地和红原的日干则湿地为3个主要的黑颈鹤集中活动地区。使用平均密度法估计大若尔盖湿地的黑颈鹤种群数量为2635只。

关键词：黑颈鹤数量分布大若尔盖湿地

Micro-strain regulation strategy to stabilize perovskite lattice based on the categories and impact of strain on perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 578-604页

作者： Caixia Li Wenwu Liu Shiji Da Lingbin kong Fen Ran State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology School of Materials Science and Engineering Lanzhou University of Technology

Photovoltaic metal halide perovskite solar cells(PSCs) convert light to electricity more efficiently than crystalline silicon cells, and the cost of materials used to make them is lower than that of silicon *** efficiency is not a core issue affecting the application of perovskite solar cells in special *** present, stability is the major technical encounters that hinders its further commercial development. Microstrain in PSCs is currently a significant factor responsible for the device's instability. Strain-induced ion migration is widely believed to accelerate perovskite degradation even when external stimuli are ***, it is imperative to study strain to enhance the stability of PSCs. This paper reviews recent developments to understand strain's origin and effect mechanisms on performance of PSCs, including ion migration,failure behavior, defect formation, and its effect on photoelectric properties, stability, and ***, several well-known strain management strategies are systematically introduced based on the strain effect mechanism and strain engineering on the film, providing more clues for further preparation with increased stability. The manipulation of external physical strain applied from films to entire devices has been extensively studied. Furthermore, recommendations for future research directions and chemical approaches have been provided. It is emphasized that strain engineering plays a crucial role in improving the efficiency and longevity of PSCs. Tensile strain causes rapid degradation, while moderate compressive strain and external strain control could improve properties and stability. Efforts should focus on controlling compressive strain to mitigate residual tensile strain and introducing it in a controlled manner. Future research endeavors may focus on exploring these pathways to improve the efficiency and lifespan of PSCs.

关键词： Halide perovskite solar cells Strain origins Strain effects Strain management

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黑颈鹤鸣叫行为及声谱特征分析

Zoological Research 2014年第S1期35卷 167-180页

作者：孔德军钟兴耀张金国赵锡森杨晓君中国科学院昆明动物研究所遗传资源与进化国家重点实验室云南昆明650223 昆明学院生命科学与技术系云南昆明650144 大山包黑颈鹤国家级自然保护区管理局云南昭通657000 北京动物园北京100044

2009年11月—2010年3月和2010年6—7月分别对云南大山包黑颈鹤国家级自然保护区的野生黑颈鹤(Grus nigricollis)种群和北京动物园的笼养个体进行了鸣叫行为和声谱特征分析。共记录到黑颈鹤的6种短鸣叫,包括通讯鸣叫、起飞鸣叫、报警鸣... 详细信息

2009年11月—2010年3月和2010年6—7月分别对云南大山包黑颈鹤国家级自然保护区的野生黑颈鹤(Grus nigricollis)种群和北京动物园的笼养个体进行了鸣叫行为和声谱特征分析。共记录到黑颈鹤的6种短鸣叫,包括通讯鸣叫、起飞鸣叫、报警鸣叫、保卫鸣叫、聚拢鸣叫及交配前鸣叫。研究发现黑颈鹤成体的通讯鸣叫频率显著低于幼体。成体通讯鸣叫具有6种音节类型(频率范围:332.80~1902.30 Hz),幼体通讯鸣叫具有7种音节(频率范围:2229.20~5266.70 Hz)。起飞鸣叫及报警鸣叫具有两种音节型。保卫鸣叫仅有一种音节型,交配前鸣叫由雌性发出。黑颈鹤雌雄两性的鸣叫频率和音节持续时间均具有显著差异,其中,雌性报警鸣叫最高频率(雄性:1016.43±105.53 Hz;雌性:1817.97±512.68 Hz)、保卫鸣叫最高频率(雄性:1127.00±83.05 Hz;雌性:1334.23±42.68 Hz)、报警鸣叫频率间隔(雄性:485.77±42.01 Hz;雌性:1309.63±539.57 Hz)及保卫鸣叫频率间隔(雄性:521.22±102.28 Hz;雌性:705.88±88.42 Hz)均显著高于雄性;雌性保卫鸣叫持续时间(雄性:0.35±0.06 s;雌性:0.41±0.06 s)大于雄性。该研究结果表明黑颈鹤的鸣叫声谱特征有助于黑颈鹤的性别鉴别。

关键词：黑颈鹤鸟鸣鸣叫行为声谱特征