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| 1 | Using specific secondary metabolites as markers to evaluate allelopathic potentials of rice varieties and individual plants显示文摘It is a key of the breeding of ailelopathic rice cultivars to evaluate and screen few accessions with ailelopathic traits from numerous rice accessions and individual plants. Rice varieties and individual plants with ailelopathic traits demonstrated their ailelopathic effects by producing and releasing specific secondary metabolites into environment. Therefore, using specific secondary metabolites as markers, the ailelopathic potentials of rice varieties and individual plants could be evaluated by HPLC. The ailelopathic potentials of 3000 rice accessions and some individual plants of F3 and F4 were evaluated by this method in 1 a. If these accessions and plants were evaluated by the traditional method in the field, it would take more than 10 a, furthermore, the breeding process of ailelopathic rice cultivars would be directed and monitored by this method. Isolation and structural identification of specific secondary metabolites was done by LC/MS coupling 1H and 13C NMR. It revealed that allelochemicals | KONG Chuihua XU Xiaohua HU Fei CHEN Xionghui LING Bing TAN Zhongwen | 2002 | Chinese Science Bulletin2002，47，10： | 17 |
| 2 | Mineralogical characteristics of airborne particles collected in Beijing during a severe Asian dust storm period in spring 2002显示文摘Asian dust storm (ADS) samples were collected on March 20,2002 in Beijing,China. High-resolution field emission scanning electron microscopy with energy dispersive X-ray detector (FESEM-EDX) and X-ray diffraction (XRD) were used to study the morphology,chemical compositions,number-size dis-tributions and mineralogical compositions of ADS particles. The mineral particles were major compo-nents in the ADS samples,accounting for 94% by number. The XRD analysis indicated that the dust particles were dominated by clay (40.3%),and quartz (19.5%),followed by plagioclase (8.4%),calcite (7.5%),K-feldspar (1.5%),hematite (0.9%),pyrite (0.9%),hornblende (0.4%) and gypsum (0.3%),with a certain amount of noncrystalline materials (20.3%). Clay minerals were mainly illite/smectite mixed lay-ers (78%),followed by illite (9%),kaolinite (6%),and chlorite (7%). In addition to these main minerals,FESEM-EDX also detected some trace minerals,such as dolomite,pyrite,thenardite,as well as heavy minerals represented by rutile,ilmenite and apatite. The mineralogical compositions of the 2002-03-20 Asian dust storm and the Saharan dust plumes were similar but the clay mineralogy showed a great distinction,with the illite/smectite mixed layers being common in the Asian dust storm but illite being common in the Saharan dust plumes. | SHAO LongYi LI WeiJun YANG ShuShen SHI ZongBo LÜ SenLin | 2007 | Science China Earth Sciences2007，50，6： | 11 |
| 3 | 卫星搭载对紫花苜蓿当代植株生物量的影响(英文)显示文摘[Objective] The aim of this study was to investigate the effect of space flight factors on plant biomass in the generation of alfalfa carried by the satellite.[Method]Seeds from three lines of alfalfa were carried by the seed-breeding satellite Shijian-8.After the satellite returned to the ground,stem diameter,primary branch number and current-year individual biomass of alfalfa were studied.[Result]After space flight,primary branch number and current-year individual biomass of alfalfa increased significantly,while the stem diameter had no significant change.Using the value over(the mean value of control + three standard deviation)as a criterion to screen,the variants with enlarged stem diameter,increased primary branch number and individual biomass was two,five and twelve respectively.[Conclusion]The obtained variants can be used in the variety improvement of alfalfa and its new variety breeding,but whether its favorable variation can inherit stably to the progenies needs further study. | 任卫波 赵亮 王蜜 陈立波 郭慧琴 | 2008 | Agricultural Science & Technology2008，9，5： | 10 |
| 4 | Carbon isotopic studies of individual lipids in organisms from the Nansha sea area, China显示文摘Carbon isotopes of individual lipids in typical organisms from the Nansha sea area were measured by the GC-IRMS analytical technique. d 13C values of saturated fatty acids in different organisms examined are from -25.6 to -29.7 with the average values ranging from -26.4 to -28.2 and the variance range of 1.8 between different organisms is also observed. Unsaturated fatty acids have heavy carbon isotopic compositions and the mean differences of 2.9—6.8 compared to the same carbon number saturated fatty acids. d 13C values of n-alkanes range from -27.5 to -29.7 and their mean values, ranging from -28.6 to -28.9, are very close in different organisms. The mean difference in d 13C between the satu-rated fatty acids and n-alkanes is only 1.5, indicating that they have similar biosynthetic path-ways. The carbon isotopic variations between the different carbon-number lipids are mostly within 2.0, reflecting that they experienced a biosynthetic process of the carbon chain elon-gation. At the same time, the carbon isotopic genetic relationships between the biological and sedimentary lipids are established by comparative studies of carbon isotopic compositions of individual lipids in organisms and sediments from the Nansha sea area, which provides scientific basis for carbon isotopic applied research of individual lipids. | DUAN Yi1,2, SONG Jinming3 & ZHANG Hui1 1. Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000, China 2. School of Geology, Lanzhou University, Lanzhou 730000, China 3. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | 2004 | Science China Earth Sciences2004，47，7： | 10 |
| 5 | Storage reliability assessment model based on competition failure of multi-components in missile显示文摘The degradation data of multi-components in missile is derived by periodical testing. How to use these data to assess the storage reliability(SR) of the whole missile is a difficult problem in current research. An SR assessment model based on competition failure of multi-components in missile is proposed. By analyzing the missile life profile and its storage failure feature, the key components in missile are obtained and the characteristics voltage is assumed to be its key performance parameter. When the voltage testing data of key components in missile are available, a state space model(SSM) is applied to obtain the whole missile degradation state, which is defined as the missile degradation degree(DD). A Wiener process with the time-scale model(TSM) is applied to build the degradation failure model with individual variability and nonlinearity. The Weibull distribution and proportional risk model are applied to build an outburst failure model with performance degradation effect. Furthermore, a competition failure model with the correlation between degradation failure and outburst failure is proposed. A numerical example with a set of missiles in storage is analyzed to demonstrate the accuracy and superiority of the proposed model. | Yunxiang Chen Qiang Zhang Zhongyi Cai Lili Wang | 2017 | Journal of Systems Engineering and Electronics2017，28，3： | 9 |
| 6 | Physicochemical analysis of individual atmospheric fine particles based on effective surface-enhanced Raman spectroscopy显示文摘Fine particles associated with haze pollution threaten the health of more than 400 million people in China. It is therefore of great importance to thoroughly investigate and understand their composition. To determine the physicochemical properties in atmospheric fine particles at the micrometer level, we described a sensitive and feasible surface-enhanced Raman scattering(SERS) method using Ag foil as a substrate. This novel method enhanced the Raman signal intensities up to 10,000 a.u. for ν(NO_3^-) in fine particles.The SERS effect of Ag foil was further studied experimentally and theoretically and found to have an enhancement factor of the order of ~10~4. Size-fractionated real particle samples with aerodynamic diameters of 0.4–2.5 μm were successfully collected on a heavy haze day,allowing ready observation of morphology and identification of chemical components, such as soot, nitrates, and sulfates. These results suggest that the Ag-foil-based SERS technique can be effectively used to determine the microscopic characteristics of individual fine particles, which will help to understand haze formation mechanisms and formulate governance policies. | Zhenli Sun Fengkui Duan Kebin He Jingjing Du Liu Yang Hui Li Tao Ma Shuo Yang | 2019 | Journal of Environmental Sciences2019，31，1： | 9 |
| 7 | Calculation and characteristics analysis of blade pitch loads for large scale wind turbines显示文摘Based on the electric pitch system of large scale horizontal-axis wind turbines,the blade pitch loads coming mainly from centrifugal force,aerodynamic force and gravity are analyzed,and the calculation models for them are established in this paper.For illustration,a 1.2 MW wind turbine is introduced as a practical sample,and its blade pitch loads from centrifugal force,aerodynamic force and gravity are calculated and analyzed separately and synthetically.The research results showed that in the process of rotor rotating 360o,the fluctuation of blade pitch loads is similar to cosine curve when the rotor rotational speed,in-flow wind speed and pitch angle are constant.Furthermore,the amplitude of blade pitch load presents quite a difference at a different pitch angle.The ways of calculation for blade pitch loads are of the universality,and are helpful for further research of the individual pitch control system. | DAI JuChuan1,2,HU YanPing1,LIU DeShun1,2 & LONG Xin3 1 School of Electromechanical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China 2 College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China 3 Hara XEMC Windpower Co.,Ltd.,Xiangtan 411000,China | 2010 | Science China(Technological Sciences)2010，53，5： | 7 |
| 8 | Carbon isotopic characteristics and their genetic relationships for individual lipids in plants and sediments from a marsh sedimentary environment显示文摘The carbon isotopes of individual lipids in herbaceous plants and tree leaves in Ruoergai marsh were measured by the GC-IRMS analytical technique in order to understand the inherent relationships of carbon isotopes between sedimentary and plant lipids from typical marsh environment. The analytical results show that the carbon isotopic compositions of n-alkanes in different kinds of plants differ significantly. Mean δ 13C values of n-alkanes in her-baceous plants (?32.2‰―?36.9‰) are 3.3‰ lower than those in woody plant (?27.2‰― ?35.0‰). The carbon isotopic compositions of fatty acids in organisms (?30.3‰― ?36.2‰) are very similar to those of n-alkanes and the δ 13C values for unsaturated fatty acids are within the range of those for saturated fatty acids. The differences in δ 13C values between plant lipids are obvious and range from 2.4‰ to 7.8‰. It is observed that the carbon isotopic compositions of sedimentary lipids are closely related to those of plant lipids. The carbon isotopic compositions (?27.0‰―?36.9‰) of n-alkanes, ≥C16 fatty acids, n-alkanols, sterols and n-alkanones in the sediments are similar to those of plant lipids and the carbon isotopic compositions of short-chain sedimentary lipids are similar to those of long-chain sedimentary homologues. These indicate that the sedimentary lipids are derived from high plants. However, the δ 13C values of C14:0 and C15:0 fatty acids in the sediments are lighter than those of the same carbon number saturated homologues in plants, reflecting the genetic features partially derived from bacteria. These data provide scientific evidence for carbon isotope-applied research of individual lipids. | DUAN Yi1, ZHANG Hui1, ZHENG Chaoyang1, WU Baoxiang1 & ZHENG Guodong2 1. Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000, China 2. Department of Earth & Planetary System Science, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-85Japan | 2005 | Science China Earth Sciences2005，48，8： | 6 |
| 9 | Distributed Brillouin frequency shift extraction via a convolutional neural network显示文摘Distributed optical fiber Brillouin sensors detect the temperature and strain along a fiber according to the local Brillouin frequency shift(BFS),which is usually calculated by the measured Brillouin spectrum using Lorentzian curve fitting.In addition,cross-correlation,principal component analysis,and machine learning methods have been proposed for the more efficient extraction of BFS.However,existing methods only process the Brillouin spectrum individually,ignoring the correlation in the time domain,indicating that there is still room for improvement.Here,we propose and experimentally demonstrate a BFS extraction convolutional neural network(BFSCNN)to retrieve the distributed BFS directly from the measured two-dimensional data.Simulated ideal Brillouin spectra with various parameters are used to train the BFSCNN.Both the simulation and experimental results show that the extraction accuracy of the BFSCNN is better than that of the traditional curve fitting algorithm with a much shorter processing time.The BFSCNN has good universality and robustness and can effectively improve the performances of existing Brillouin sensors. | YIQING CHANG HAO WU CAN ZHAO LI SHEN SONGNIAN FU MING TANG | 2020 | Photonics Research2020，8，5： | 6 |
| 10 | Morphology,composition,and sources of individual aerosol particles at a regional background site of the YRD,China显示文摘Aerosol samples were collected at Lin'an, a background site of Yangtze River Delta(YRD).Morphology, size, composition, and mixing state of individual aerosol particles were characterized by transmission electron microscopy(TEM) coupled with energy dispersive X-ray spectroscopy(EDS), and the soluble ions of PM_(1.0) were studied by aerosol mass spectrometer(AMS). The daily average AMS mass concentrations of sulfate, nitrate, and ammonium were about 5.8, 8.6, and 5.6 μg/m^3, respectively. Individual aerosol particles were classified into seven types: S-rich, K-rich, organic matter(OM), soot, fly ash, metal, and mineral. S-rich particles were dominant in all size bins, and 51%(by number) of S-rich particles were internally mixed with other particles. The fraction of organic coating particles was 13.7% in morning, 25.2% in afternoon, and 11% in evening, suggesting that the strong photochemical process during afternoon produced more secondary organic aerosols(SOA) on the surface of inorganic particles. Fly ash and metal particles were abundant during the day, suggesting the influence of emissions from coal-fired power plants and steel plants. The results indicate that the intense industrial emissions in the YRD significantly transported to the background areas. PM_(2.5) concentration may be lower in background air than in urban air but complex mixing state of aerosol particles indicates that the long-range transported particles substantially influenced the background air quality. | Liang Xu A.P.Lingaswamy Yinxiao Zhang Lei Liu Yuanyuan Wang Jian Zhang Qianli Ma Weijun Li | 2019 | Journal of Environmental Sciences2019，31，3： | 6 |
| 11 | Evidence from carbon isotope measurements for biological origins of individual long-chain n-alkanes in sediments from the Nansha Sea,China显示文摘Carbon isotopes are measured for individual long-chain n-alkanes in sediments from the Nansha Sea. The features of carbon isotopic compositions of individual n-alkanes and their origins are studied. The results show that the long-chain n-alkanes have a light carbon isotopic composition and a genetic feature of mixing sources, and low-latitude higher plants and microbes are considered to be their main end member sources. Based on the abundances and carbon isotopic compositions of individual n-alkanes, the fractional contributions of the two end member sources to individual n-alkanes are quantitatively calculated by using a mixing model. The obtained data indicate that the fractional contributions of the two biological sources are different in the three samples. A trend is that the contribution of microbes increases with the depth. These results provide the theory basis and quantitatively studied method for carbon isotopic applied research of individual n-alkanes. | DUAN Yi & WANG ZhipingState Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000, China Institute of Environmental Science, Beijing Normal University, Beijing 100875, China | 2002 | Chinese Science Bulletin2002，47，7： | 6 |
| 12 | The characteristic periodicity analysis of the radio flux variability of quasar PKS 1510-089显示文摘A wavelet analysis method is introduced to study the possible periods of PKS 1510-089 in radio bands. By compiling the radio light curve of PKS 1510-089 at frequencies of 22 and 37 GHz from 1990 to 2005, and using the wavelet analysis method, the evidence of quasi-periodic activity in PKS 1510-089 was obtained. The results indicate that: (1) There are two stable outburst periods of T1=(1.80±0.06) yr and T2= (0.90±0.07) yr presenting in the isoplethal map of PKS 1510-089 at the radio band 37 GHz; (2) there is an outburst period of T1=(1.80±0.06) yr presenting at the radio band 22 GHz; (3) by the continuum of the isograms map, we find the primary period of PKS 1510-089 is T1=(1.80±0.06) yr, and the period of T2= (0.90±0.07) yr may be the half period. The above results are consistent with the reports of Xie et al. (2004, 2005, 2008), Wu et al. (2005) and Liu & Fan (2007), using the other methods. We can expect that the next burst will be in January 2011. | ZHANG HaoJing ZHAO Gang ZHANG Xiong DONG FuTong XIE ZhaoHua YI TingFeng ZHENG YongGang BAO YuYing | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，9： | 4 |
| 13 | New Individual Identification Method of Radiation Source Signal Based on Entropy Feature and SVM显示文摘In this paper,according to the defect of methods which have low identification rate in low SNR,a new individual identification method of radiation source based on information entropy feature and SVM is presented. Firstly,based on the theory of multi-resolution wavelet analysis,the wavelet power spectrum of noncooperative signal can be gotten. Secondly,according to the information entropy theory,the wavelet power spectrum entropy is defined in this paper. Therefore,the database of signal's wavelet power spectrum entropy can be built in different SNR and signal parameters. Finally,the sorting and identification model based on SVM is built for the individual identification of radiation source signal. The simulation result indicates that this method has a high individual's identification rate in low SNR,when the SNR is greater than 4 dB,the identification rate can reach 100%. Under unstable SNR conditions,when the range of SNR is between 0 dB and 24 dB,the average identification rate is more than 92. 67%. Therefore,this method has a great application value in the complex electromagnetic environment. | Yun Lin Xiao-Chun Xu Zi-Cheng Wang | 2014 | Journal of Harbin Institute of Technology(New Series)2014，21，1： | 4 |
| 14 | Pharmacometabolomic prediction of individual differences of gastrointestinal toxicity complicating myelosuppression in rats induced by irinotecan显示文摘Pharmacometabolomics has been already successfully used in toxicity prediction for one specific adverse effect. However in clinical practice, two or more different toxicities are always accompanied with each other, which puts forward new challenges for pharmacometabolomics. Gastrointestinal toxicity and myelosuppression are two major adverse effects induced by Irinotecan(CPT-11),and often show large individual differences. In the current study, a pharmacometabolomic study was performed to screen the exclusive biomarkers in predose serums which could predict late-onset diarrhea and myelosuppression of CPT-11 simultaneously. The severity and sensitivity differences in gastrointestinal toxicity and myelosuppression were judged by delayed-onset diarrhea symptoms, histopathology examination, relative cytokines and blood cell counts. Mass spectrometry-based non-targeted and targeted metabolomics were conducted in sequence to dissect metabolite signatures in predose serums. Eventually,two groups of metabolites were screened out as predictors for individual differences in late-onset diarrhea and myelosuppression using binary logistic regression, respectively. This result was compared with existing predictors and validated by another independent external validation set. Our study indicates the prediction of toxicity could be possible upon predose metabolic profile. Pharmacometabolomics can be a potentially useful tool for complicating toxicity prediction. Our findings also provide a new insight into CPT-11 precision medicine. | Yiqiao Gao Wei Li Jiaqing Chen Xu Wang Yingtong Lv Yin Huang Zunjian Zhang Fengguo Xu | 2019 | Acta Pharmaceutica Sinica B2019，9，1： | 4 |
| 15 | Fatty acid analysis in the seeds of 50 Paeonia ostii individuals from the same population显示文摘Tree peony seeds are rich in α-linolenic acid(ALA), and the peony seed oil is now being produced in China. Paeonia ostii is the most widely used tree peony species for oil extraction, which is commercially called Fengdan and treated as a single cultivar. Here, 50 P. ostii individuals from the same population in northern China were randomly selected for fatty acids(FAs) analysis. Thirteen FAs were isolated, and the most abundant five were palmitic acid(5.31–6.99%), stearic acid(1.22–2.76%), oleic acid(18.78–28.15%), linoleic acid(11.86–26.10%), and ALA(41.11–57.51%). There were significant individual differences of plants in FA quality and quantity and the linoleic acid content in Plant No. 48 even exceeded the scope of 1–99%. Further statistical analysis indicated that most of the individual FAs, saturated FAs, unsaturated FAs, and total FAs levels showed significant positive correlations to each other, whereas the seed yield per plant was independent and not correlated to the factors mentioned above. Ward's hierarchical clustering results grouped the 50 plants into four clusters based on FA contents and seed yield, and the seven plants in Cluster IV were identified as good candidates for oil production. Our results confirmed that the individual differences did occur in P. ostii and Fengdan cannot be simply treated as one uniform cultivar. Also, these results may help simplify the selection of plants for oil peony breeding and accelerate the development of the oil peony industry. | WEI Xiao-bao XUE Jing-qi WANG Shun-li XUE Yu-qian LIN Huan SHAO Xing-feng XU Dong-hui ZHANG Xiu-xin | 2018 | Journal of Integrative Agriculture2018，17，8： | 4 |
| 16 | Genetic factors for individual administration of immunosuppressants in organ transplantation显示文摘BACKGROUND: The immunosuppressive drugs used worldwide have a narrow therapeutic index, which results in a need to individualize the dose regimen for different recipients. The oxidative enzymes cytochrome P450 (CYP)3A and the drug efflux pump P-glycoprotein (P-gp) are two potential factors in the processes of metabolism. Pharmacogenetic study of immunosuppressive drugs has focused on these two enzymes. This review was undertaken to assess the role of single nuclear polymorphisms (SNPs) of these two enzymes in the individual administration of immunosuppressive drugs. DATA SOURCES: An English-language literature search was made using MEDLINE for articles on CYP3A and P-gp in organ transplantation. RESULTS: The SNPs of CYP3A and P-gp are closely correlated to the large variations of cyclosporine and tacrolimus dosage between different patients, although conflicting results were obtained by some authors. CONCLUSIONS: More studies should be conducted to elucidate further the pharmacogenetics of immunosuppressive drugs in organ transplantation, a deep understanding of which would provide an important step toward drug regimen individualization in the posttransplant therapy. | Song-Feng Yu, Li-Hua Wu and Shu-Sen Zheng Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China | 2006 | Hepatobiliary & Pancreatic Diseases International2006，5，3： | 4 |
| 17 | 脚型三维测量与特征参数自动提取显示文摘脚型自动测量的目的是提取与制鞋相关的特征参数,并用这些特征参数指导鞋楦的设计,制造出合脚的鞋.使用脚型三维扫描仪,获得了脚的三维数字模型.详细描述了主要特征参数的定义,提出了在未做标记的情况下特征参数的提取方法,结合实际脚型测量给出了测量结果.特征参数的自动提取可为个体化鞋楦的设计和量脚制鞋提供必要的数据支持. | 胡安铎 苏显渝 向立群 刘成林 | 2009 | 四川大学学报(自然科学版)2009，46，6： | 4 |
| 18 | The carbon isotopic composition of individual n-alkanes in marsh environment显示文摘In the late 1980s the introduction of a new isotopic analytical technique of GC-C-MS that can determine the carbon isotopic composition at the molecular level has led to the appearence of the stable carbon isotopic geochemistry of biomarker compounds as a new field of scientific research. The relationship between the carbon isotopic compositions of biomarker compounds and biological precursors and diagenetic evolution is one of the key problems in this research field. Some studies on this problem have been carried out abroad in terms of organisms and modern sediments as well as the experiments of thermal simulation. Studied results show that the carbon isotopic compositions of biomarker compounds in the sediments are closely related to those in biological precursors and diagenetic evolution. For example, Reiley et al. have examined the carbon | 段毅 文启彬 罗斌杰 | 1996 | Chinese Science Bulletin1996，41，1： | 4 |
| 19 | Morphology and composition of particles emitted from a port fuel injection gasoline vehicle under real-world driving test cycles显示文摘Traffic vehicles, many of which are powered by port fuel injection(PFI) engines, are major sources of particulate matter in the urban atmosphere. We studied particles from the emission of a commercial PFI-engine vehicle when it was running under the states of cold start, hot start, hot stabilized running, idle and acceleration, using a transmission electron microscope and an energy-dispersive X-ray detector. Results showed that the particles were mainly composed of organic, soot, and Ca-rich particles, with a small amount of S-rich and metal-containing particles, and displayed a unimodal size distribution with the peak at 600 nm. The emissions were highest under the cold start running state, followed by the hot start, hot stabilized, acceleration, and idle running states. Organic particles under the hot start and hot stabilized running states were higher than those of other running states. Soot particles were highest under the cold start running state. Under the idle running state, the relative number fraction of Ca-rich particles was high although their absolute number was low. These results indicate that PFI-engine vehicles emit substantial primary particles,which favor the formation of secondary aerosols via providing reaction sites and reaction catalysts, as well as supplying soot, organic, mineral and metal particles in the size range of the accumulation mode. In addition, the contents of Ca, P, and Zn in organic particles may serve as fingerprints for source apportionment of particles from PFI-engine vehicles. | Jiaoping Xing Longyi Shao Wenbin Zhang Jianfei Peng Wenhua Wang Cong Hou Shijin Shuai Min Hu Daizhou Zhang | 2019 | Journal of Environmental Sciences2019，31，2： | 4 |
| 20 | Individualized minimally invasive treatment for adult testicular hydrocele: A pilot study显示文摘BACKGROUND Hydrocelectomy is the gold standard for the treatment of hydrocele,but it often causes complications after surgery,including hematoma,infection,persistent swelling,hydrocele recurrence,and chronic pain. In recent years,several methods for minimally invasive treatment of hydrocele have been introduced,but they all have limitations. Herein,we introduce a new method of individualized minimally invasive treatment for hydrocele.AIM To present a new method for the treatment of adult testicular hydrocele.METHODS Fifty-two adult patients with idiopathic testicular hydrocele were included. The key point of this procedure was that the scope of the resection of the sheath of the tunica vaginalis was determined according to the maximum diameter(d) of the effusion measured by ultrasound and the maximum diameter of the portion of the sheath pulled out of the scrotum was approximately πd/2. The surgical procedure consisted of a 2-cm incision in the anterior wall of the scrotum,drainage of the effusion,and dissection of part of the sheath of the tunica vaginalis. After the sheath was peeled away to the predetermined target extent,the pulled-out sheath was removed. The intraoperative findings and postoperative complications were analyzed.RESULTS All patients were successfully treated with a median operation time of 18 min.The median maximum diameter of the effusion on ultrasound was 3.5 cm,and the median maximum diameter of the resected sheath was 5.5 cm. Complications occurred in four(7.7%) patients: two(3.8%) cases of mild scrotal edema,one(1.9%) case of scrotal hematoma,and one(1.9%) case of wound infection. All of the complications were grade I-II. Recurrent hydrocele,chronic scrotal pain,and testicular atrophy were not observed during a median follow-up of 12 mo.CONCLUSION We report a new technique for individualized treatment of testicular hydrocele,which is quantitative and minimally invasive and yields good outcomes. Further study is warranted to verify its potential value in clinical practice. | Le Lin Huai-Shan Hong Yun-Liang Gao Jin-Rui Yang Tao Li Qing-Guo Zhu Lie-Fu Ye Yong-Bao Wei | 2019 | World Journal of Clinical Cases2019，7，6： | 4 |
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