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The breeding biology of endemic Spectacled Parrotbill(Sinosuthora conspicillatus) in Lianhuashan National Nature Reserve, Gansu Province, China

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Avian Research 2018年第1期9卷 43-48页

作者： Lijun Chen lei zhu Yunbiao Hu Pengfei Liu Nan Lyu Yuehua Sun Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Beijing 100101 China Chengdu Bird Watching Society Chengdu 610041 China

Background: Life history traits play critical roles in population survival and *** information should be particularly detailed in order to provide significant insights into the population status and the evolution of other *** our knowledge, there is still no information about the breeding biology of Spectacled Parrotbill(Sinosuthora conspicillatus), an endemic parrotbill in ***: We searched the nests, checked all nests found and recorded the information of eggs, nestlings and nest sites of the Spectacled Parrotbill from 2013 to 2015 at Lianhuashan National Nature Reserve in Gansu Province, ***: A total of 16 nests were *** trees were artificial young spruces and *** nest height was 0.89 ± 0.47 m(n = 16) above the ground *** nests were cup-shaped and constructed using leaves, fine strips of barks and grasses by both *** mean clutch size was 4.42 ± 0.79(n = 12).The eggs were oval in pale blue without speckles, and the mean egg mass was 1.25 ± 0.07 g(n = 27).The egg length was 15.56 ± 0.46 mm(n = 27) and the width was 12.46 ± 0.29 mm(n = 27).Incubation period was 13 days and nestling period was 13–14 *** breeding success rate was 46%, and among those failed nest, 71% were depredated and 29% were ***: Detailed life history information about parrotbill is still *** breeding biology of Spectacled Parrotbill reported in the present study should be helpful for further research about population, breeding behavior and conservation of this bird.

关键词： Reproduction Paradoxornithidae Nest description Brood size Egg size Nest survival

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Geochemical significance of the relative enrichment of pristane and the negative excursion of δ^(13)C_(Pr) across the Permian-Triassic Boundary atMeishan, China

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Chinese Science Bulletin 2005年第19期50卷 2213-2225页

作者： WANG Chunjiang LIU Yimei LIU Hongxiu zhu lei SHI Quan Laboratory of Geochemistry and Environmental Sciences Faculty ofGeosciences China University of Petroleum Beijing 102249 China

Changes in the distribution of isoprenoid hy-drocarbons and in δ 13Ckero or δ 13CPr across the section from the Changxing Formation to the lower Yinkeng Formation at Meishan (the GSSP of PTB) are studied, in which a relative enrichment of pristane and a sharp shift in both δ 13Ckero and δ 13Cmole near the boundary are revealed. A possible mecha-nism for the abnormal accumulation of pristane near PTB is suggested: Lipids in some marine animals and their metabo-lites, rich in pristane, can be preserved and accumulate in some suitable depositing facies under certain special condi-tions, such as the catastrophic death of animals and/or de-veloping of an anoxic water column, and thus the pristane enrichment occurs in the sediment. The occurrences of iso-prenoid enrichment and high Pr/Ph ratios have been found in other typical marine anoxic sediments accompanied by mass extinction in various extent during the most important geological periods, such as Late Ordovician, end of Devonian,Early Jurassic and Late Cretaceous. These occurrences sup-port to a certain extent the above mechanism that interprets the genesis of a high Pr/Ph ratio in some typical marine an-oxic sediments. The synchronous sharp negative shifts in δ 13Cmole, δ 13Ckero and δ 13Ccarb from Beds 24 to 26 of the Me-ishan profile indicate that a sudden and strong variation of carbon source in the atmosphere-ocean system occurred during the quick but equable evolution from the end-Permian to Early Triassic, and the coupling between the pristane enrichment and negative shift in δ 13Ckero and δ 13CPr may well indicate the importance of the release of methane hydrates and marine anoxia in the end-Permian mass extinc-tion.

关键词：地球化学碳氢化合物同位素油脂 PTB

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A Fast Tongue Detection and Location Algorithm in Natural Environment

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Computers, Materials & Continua 2022年第12期73卷 4727-4742页

作者： lei zhu Guojiang Xin Xin Wang Changsong Ding Hao Liang Qilei Chen School of Informatics Hunan University of Chinese MedicineChangsha410208China TCM Big Data Analysis Laboratory of Hunan Changsha410208China Department of Computer Science University of Massachusetts LowellLowell01854USA

The collection and extraction of tongue images has always been an important part of intelligent tongue *** present,the collection of tongue images generally needs to be completed in a sealed,stable light environment,which is not conducive to the promotion of extensive tongue image and intelligent tongue *** response to the problem,a newalgorithm named GCYTD(GELU-CA-YOLO Tongue Detection)is proposed to quickly detect and locate the tongue in a natural environment,which can greatly reduce the restriction of the tongue image collection *** algorithm is based on the YOLO(You Only Look Once)V4-tiny network model to detect the ***,the GELU(Gaussian Error Liner Units)activation function is integrated into the model to improve the training speed and reduce the number of model parameters;then,the CA(Coordinate Attention)mechanism is integrated into the model to enhance the detection precision and improve the failure tolerance of the *** with the other classical algorithms,Experimental results show thatGCYTD algorithm has a better performance on the tongue images of all types in terms of training speed,tongue detection speed and detection precision,*** lighter model can contribute on deploying the tongue detection model on small mobile terminals.

关键词： Tongue detection YOLO V4-tiny CA mechanism GELU

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Oil maturity assessment using maturity indicators based on methylated dibenzothiophenes

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Petroleum Science 2014年第2期11卷 234-246页

作者： Li Meijun Wang T.-G Shi Shengbao zhu lei Fang Ronghui State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum College of Geosciences China University of Petroleum

Aromatic fractions of 140 oils and condensates that originated from different types of source rocks （marine shale,terrestrial shale and marine carbonate） were analyzed using gas chromatographymass spectrometry （GC-MS） to investigate the relative distributions of methylated dibenzothiophenes with respect to thermal *** positions of methyl groups of trimethyldibenzothiophene isomers （TMDBTs） including those used in the definition of maturity indicator TMDBT index in previous studies were firmly identified by co-elution of internal standards in GC-MS analysis and by comparing with reported retention indices.A new maturity ratio related to dimethyldibenzothiophenes （DMDBTs） is proposed on the basis of the differences in thermodynamic stability among different DMDBT *** maturity index （TMDBT-I2） based on TMDBTs is also suggested on the basis of our empirical observations and presumed thermodynamic stability of TMDBT *** two newly proposed （2,6 ＋ 3,6）-/1,4-DMDBT ratio and TMDBT-I2 correlate well with MDR （4-/1-methyldibenzothiophene）and 2,4-/1,4-DMDBT ratios,suggesting their common chemical reaction mechanisms and similar behavior with increasing ***,they can be effectively applied for maturity ***,the TMDBTs related maturity parameters are more reliable for over-mature oils and condensates due to the relatively higher concentrations of thermodynamically unstable TMDBT isomers,i.e.1,4,6-,1,4,8-and 3,4,6-TMDBT in this study than those of 1-methyldibenzothiophene （1-MDBT） or 1,*** contrast with 4,6-/1,4-DMDBT,the newly proposed （2,6 ＋ 3,6）-/1,4-DMDBT ratios for oils that originated from different types of source rocks have approximately same relationship with the oil maturity （Rc %）.This suggests that the lithology and organic facies may have relatively less influence on （2,6 ＋ 3,6）-/1,4-DMDBT ratio compared to 4,6-/1,*** maturity parameters based on methylated dibenzothiophenes are particularl

关键词： Dibenzothiophene maturity indicator molecular thermodynamic stability sedimentaryorganic matter

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Effect of Drainage Ditch Layout on Nitrogen Loss by Runoff from an Agricultural Watershed

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Pedosphere 2013年第2期23卷 256-264页

作者： ZHANG Zhan-Yu KONG Li-Li zhu lei R.M.MWIYA Key Laboratory of Efficient Irrigation-Drainage and Agricultural Soil-Water Environment in Southern China Ministry of EducationHohai University College of Water Conservancy and Hydropower Engineering Hohai University

A comparison experiment was performed, by designing one field ditch （D1 treatment）, two field ditches （D2 treatment）, three field ditches （D3 treatment）, and no field ditch （CK treatment）, in an upland of a small agricultural watershed in Nanjing-Zhenjiang hilly regions to observe the farmland surface runoff and N loss characteristics under the different layouts of field ditch. As the layout density of field ditch increased, the drainage effect was improved, the timing of the runoff peak was advanced, and also the peak flow was augmented. At the same time, both the concentration and accumulated transfer flux of total nitrogen （TN） were improved, and thereinto the accumulated transfer fluxes of TN under D3, D2 and D1 treatments were increased by 1.46, 1.34 and 1.16 times, respectively, than that under CK treatment. However, the accumulated transfer fluxes of nitrate-nitrogen （NO3-N） and ammonium-nitrogen （NH4＋-N） under D3, D2 and D1 treatments were reduced by 33.9%, 21.4% and 8.6%, and 35.8%, 24.7% and 12.2%, respectively, compared with those under CK treatment. Under CK treatment, the NO3-N and NH4＋-N concentrations were more sensitive to rainfall intensity than the TN concentration. There were significant linear relationships between the transfer fluxes of TN, NO3-N and NH^-N and the runoff flux, with the correlation coefficients of 0.942, 0.899 and 0.912, respectively. In addition, this correlation was also influenced by the layout density of field ditch. Therefore, the environmental effect should be taken into account when designing and constructing field ditches. Especially in the regions of severe fertilizer loss, the approaches of properly increasing the drainage area and decreasing the layout density of field ditch could be adopted under the precondition of avoiding crops from waterlogging.

关键词： drainage velocity layout density of field ditches surface runoff transfer fluxes uplands

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Retroperitoneal congenital epidermoid cyst misdiagnosed as a solid pseudopapillary tumor of the pancreas:A case report

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World Journal of Clinical Cases 2022年第8期10卷 2504-2509页

作者： Jun Ma Ya-Ming Zhang Chao-Ping Zhou lei zhu Department of Surgical Oncology Anqing Municipal HospitalAnqing 246000Anhui ProvinceChina

BACKGROUND Retroperitoneal cysts are rare and usually asymptomatic abdominal *** cysts are frequent benign cutaneous tumors,but retroperitoneal localization of these cysts does not occur very *** SUMMARY We report a case report of a 25-year-old woman with a giant mass in the abdominal *** imaging examination indicated that the mass probably originated from the pancreas,the mass was considered a solid pseudopapillary tumor of the pancreas(SPTP).However,surgery revealed a retroperitoneal epidermoid cyst located behind the pancreas neck and the root of the superior mesenteric artery(SMA).We performed complete resection of the *** pathology showed an epidermoid *** patient fared well after two months of *** Surgery is the gold standard for the diagnosis and treatment of retroperitoneal epidermoid *** epidermoid cysts around the pancreas are easily misdiagnosed as cystic *** should pay particular attention to preoperative diagnosis to reduce severe surgical complications and improve the quality of life of patients.

关键词： Epidermoid cysts Retroperitoneal tumor Solid pseudopapillary tumor of pancreas Surgery Case report

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A miniature pump with a fluid dynamic bearing

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Science China(Technological Sciences) 2012年第3期55卷 795-801页

作者： LUO XianWu JI Bin zhuANG BaoTang zhu lei LU Li XU HongYuan State Key Laboratory of Hydro Science and Engineering Tsinghua UniversityBeijing 100084China Beijing Institute of Control Engineering Beijing 100190China China Institute of Water Resources and Hydropower Research Beijing 100038China

This paper describes the development of a miniature pump having an impeller with an exit diameter of 24 mm supported with the motor rotor by a fluid dynamic beating. Tests verify that the miniature pump is stable and quiet for rotational speeds larger than 4000 rain-1. The three-dimensional turbulent flow in the entire pump flow passage and the laminar flow in the fluid dynamic bearing were then simulated numerically. The average pump performance was well predicted by the simulations. Both the tests and the simulations show that there is no obvious Reynolds effect for the miniature pump within the tested range of rotational speeds. The numerical results also show that the beating capacity of the fluid dynamic bearing increases with the pump rotor rotational speed and the eccentricity ratio of the journal to the bushing. This pump is very compact, so it is a prom- ising device for surgical use.

关键词： miniature pump fluid dynamic bearing hydraulic performance experiment numerical simulation

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Distribution of large-scale detachment faults on mid-ocean ridges in relation to spreading rates

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Acta Oceanologica Sinica 2013年第12期32卷 109-117页

作者： YU Zhiteng LI Jiabiao LIANG Yuyang HAN Xiqiu ZHANG Jie zhu lei Key Laboratory of Submarine Geosciences State Oceanic Administration The Second Institute of Oceanography State Oceanic Administration Institute of Oceanology Chinese Academy of Sciences China Ocean Mineral Resources Research and Development Association

Large-scale detachment faults on mid-ocean ridges （MORs） provide a window into the deeper earth. They have megamullion on their corrugated surfaces, with exposed lower crustal and upper mantle rocks, rela- tively high residual Bouguer gravity anomaly and P-wave velocity, and are commonly associated with ocean- ic core complex. According to 30 detachment faults identified on MORs, we found that their distances to the axis mostly range from 5 to 50 km, half-spreading rates range from 6.8 to 17 mm/a, and activity time ranges from recent to 3 Ma. Most of the detachment faults are developed on the slow spreading Mid-Atlantic Ridge （MAR） and ultra-slow spreading Southwest Indian Ridge （SWIRl, with the dominant half-spreading rates of 7-13 mm/a, especially 10-13 mm/a. Furthermore, they mostly occur at the inside corner of one segment end and result in an asymmetric seafloor spreading. The detachment faults on MORs are mainly controlled by the tectonism and influenced by the magmatism. Long-lived detachment faults tend to be formed where the ridge magma supply is at a moderate level, although the tectonism is a first-order controlling factor. At the slow spreading ridges, detachment faults tend to occur where local magma supply is relatively low, whilst at the ultra-slow spreading ridges, they normally occur where local magma supply is relatively high. These faults are accompanied by hydrothermal activities, with their relationships being useful in the study of hydrothermal polymetallic sulfides and their origin.

关键词： detachment faults oceanic core complex spreading rates distribution tectonism magmasupply hydrothermal vents

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Distribution and mechanism of gently dipping fractures subjected to river incision: A case study from Nujiang River, China

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Journal of Mountain Science 2018年第1期15卷 211-224页

作者： zhu lei HUANG Run-qiu YAN Ming CHEN Guo-qing WEI Wei State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology College of architecture and urban planning Sichuan Agricultural University

Gently dipping fractures subjected to river incision are widely distributed on rock *** this paper,a rock slope on the Nujiang River(China)is investigated to study the role of gently dipping fractures in the rock slopes *** field surveys indicate that gentle fractures are concentrated in four main ***,the kinematics of the fracture system suggest that the genesis of these fractures can be synthesized into a progressive evolution *** model indicates that the joints begin with the formation of an array of en echelon cracks that are subjected to continued crack elongation and shearing before ultimately approaching one another and interacting to form a complex joint *** analysis is performed to reveal the mechanisms of this genesis,and three main fracture patterns are identified based on the slope stress and are classified with respect to the slope *** on the detail field investigations and the evolutionary history of the river valley,we propose that intermittent incision by the river was the main factor contributing to the concentrated distribution of gently dipping joints.

关键词： Joints Rock slope Distribution Fracture mode Genesis mechanism

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Preclinical and clinical applications of specific molecular imaging for HER2-positive breast cancer

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Cancer Biology & Medicine 2017年第3期14卷 271-280页

作者： Wei Chen Xiaofeng Li lei zhu Jianjing Liu Wengui Xu Ping Wang Department of Molecular Imaging and Nuclear Medicine Department of Radiation Oncology Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy Tianjin Tianjin's Clinical Research Center for Cancer Tianjin 300060China

Precision medicine and personalized therapy are receiving increased attention, and molecular-subtype classification has become crucial in planning therapeutic schedules in clinical practice for patients with breast cancer. Human epidermal growth factor receptor 2(HER2) is associated with high-grade breast tumors, high rates of lymph-node involvement, high risk of recurrence, and high resistance to general chemotherapy. Analysis of HER2 expression is highly important for doctors to identify patients who can benefit from trastuzumab therapy and monitor the response and efficacy of treatment. In recent years, significant efforts have been devoted to achieving specific and noninvasive HER2-positive breast cancer imaging in vivo. In this work, we reviewed existing literature on HER2 imaging in the past decade and summarized the studies from different points of view, such as imaging modalities and HER2-specific probes. We aimed to improve the understanding on the translational process in molecular imaging for HER2 breast cancer.

关键词： Breast cancer human epidermal growth factor receptor 2(HER2) molecular imaging probes

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