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Stability behavior of the Lanxi ancient flood control levee after reinforcement with upside-down hanging wells and grouting curtain
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作者 QIN Zipeng TIAN Yan +4 位作者 GAO Siyuan ZHOU Jianfen HE Xiaohui HE Weizhong GAO Jingquan 《Journal of Mountain Science》 SCIE CSCD 2024年第1期84-99,共16页
The stability of the ancient flood control levees is mainly influenced by water level fluctuations, groundwater concentration and rainfalls. This paper takes the Lanxi ancient levee as a research object to study the e... The stability of the ancient flood control levees is mainly influenced by water level fluctuations, groundwater concentration and rainfalls. This paper takes the Lanxi ancient levee as a research object to study the evolution laws of its seepage, displacement and stability before and after reinforcement with the upside-down hanging wells and grouting curtain through numerical simulation methods combined with experiments and observations. The study results indicate that the filled soil is less affected by water level fluctuations and groundwater concentration after reinforcement. A high groundwater level is detrimental to the levee's long-term stability, and the drainage issues need to be fully considered. The deformation of the reinforced levee is effectively controlled since the fill deformation is mainly borne by the upside-down hanging wells. The safety factors of the levee before reinforcement vary significantly with the water level. The minimum value of the safety factors is 0.886 during the water level decreasing period, indicating a very high risk of the instability. While it reached 1.478 after reinforcement, the stability of the ancient levee is improved by a large margin. 展开更多
关键词 Stability analysis Multiple factors Antiseepage reinforcement Upside-down hanging well Grouting curtain Ancient levee
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Lessons for Life
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作者 DENG DI 《China Today》 2024年第12期62-63,共2页
Young adults in China are embracing a new way of nightlife-attending night schools for personal growth.“Guess which saves more space?Folding your clothes or hanging them in the closet?”asked Li Jing as she took out ... Young adults in China are embracing a new way of nightlife-attending night schools for personal growth.“Guess which saves more space?Folding your clothes or hanging them in the closet?”asked Li Jing as she took out various hangers.“Actually,as long as you divide your wardrobe into a long clothing zone and a short clothing zone according to your dressing habit,you’ll find that hanging them is much more convenient and space saving,”she said to her evening class of over 20 attentive young people. 展开更多
关键词 NIGHT HANGING YOUNG
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Clinical Study on the Treatment of Low Anal Fistula in Infants and Young Children by Anal Gland Excision and Virtual Hanging Procedure
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作者 Hongbo Su Linmei Sun +5 位作者 Yimiao Liang Jiansheng Hu Yongli Zhang Ni Wei Chaoyang Li Lin Tang 《Journal of Clinical and Nursing Research》 2024年第3期18-25,共8页
Objective:To compare the efficacy of anal adenectomy with virtual hanging wire and anal fistulotomy in the treatment of low anal fistula in infants and children.Methods:60 children with low anal fistula who were admit... Objective:To compare the efficacy of anal adenectomy with virtual hanging wire and anal fistulotomy in the treatment of low anal fistula in infants and children.Methods:60 children with low anal fistula who were admitted to our hospital from October 2021 to March 2022 and met the inclusion criteria were randomly divided into two groups of 30 cases each;the treatment group was treated with anal adenectomy and virtual hanging wire surgery,and the control group was treated with anal fistula resection.The clinical efficacy after treatment was compared.Results:The total effective rate of both groups was 96.67%and the difference between the two groups was not statistically significant(P>0.05).The postoperative pain score of the treatment group was lower than that of the control group(P<0.05).The length of hospitalization and healing time of the treatment group was lower than that of the control group(P<0.05).The anal function of the patients in both groups was normal,and there was no adverse reaction.Conclusion:Anal gland excision and virtual hanging surgery for the treatment of low anal fistula in infants and children have the advantages of mild pain,reduced length of hospitalization,short healing time,and better patient experience as compared to anal fistula excision. 展开更多
关键词 Anal fistula Anal gland excision Virtual hanging procedure Surgical method Observation index Clinical efficacy
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Beijing Opera Facial Masks As Wall Hangings
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作者 GUAN MIN 《Women of China》 1996年第8期56-56,共1页
In Beijing opera. and many other traditional operas, the jing roles. or warriors, usually have their faces painted in colorful designs to represent various elements of their character. Each color has its own meaning. ... In Beijing opera. and many other traditional operas, the jing roles. or warriors, usually have their faces painted in colorful designs to represent various elements of their character. Each color has its own meaning. Red stands for loyalty and bravery: black for courage and honesty. and white is the color of deceitfulness. 展开更多
关键词 AS Beijing Opera Facial Masks As Wall hangings
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Negative effects of artiffcial nest boxes on birds:A review
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作者 Luchang Zhang Xingjian Ma +4 位作者 Zhiyu Chen Chunying Wang Zicheng Liu Xiang Li Xiaoying Xing 《Avian Research》 SCIE CSCD 2023年第2期257-266,共10页
Artificial nest boxes are placed to attract birds to nest and breed in a specific location,and they are widely used in avian ecology research and in the attraction of insectivorous birds.There is evidence that artific... Artificial nest boxes are placed to attract birds to nest and breed in a specific location,and they are widely used in avian ecology research and in the attraction of insectivorous birds.There is evidence that artificial nest boxes can adversely affect breeding fitness but no great focus has been placed on this issue by researchers.Therefore,we retrieved 321 research papers regarding artificial nest boxes published from 2003 to 2022 and used the'Biblioshiny'program to extract and integrate keywords;we then summarized the adverse effects of artificial nest boxes on avian breeding success.The studies highlighted many drawbacks and misuses in the designing and placement of nest boxes;furthermore,bird attraction was decreased by their inappropriate selection,thus reducing breeding success.Regarding nest box production,there were shortcomings in the construction material,color,smell,and structural design of the boxes used.Nest boxes were also placed at inappropriate densities,locations,orientations,heights,and managed incorrectly.Finally,we propose suggestions for more efficient and safer artificial nest boxes for future use in avian ecology research and bird conservation. 展开更多
关键词 Artificial nest box Avian breeding Management Negative effect Nest box hanging Nest box location Nest box structure
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鸟类核型研究XⅣ.鸻形目14种 被引量:2
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作者 卞小庄 蔡含钧 +5 位作者 李庆伟 邵铁忠 崔志兴 吴超玲 戴恩富 徐志伟 《Zoological Research》 CAS CSCD 1993年第1期86-90,共5页
本文报道了(行鸟)形目14种鸟的核型,并发现该目种类间染色体数目变异很大,由石(行鸟)的2n=40至沙锥的2n=98不等。这种变异是由原始的2n=80核型通过两种方式形成的:在(行鸟)小目中,小染色体相互融合而造成染色体数目的减少;在鹬小目中,... 本文报道了(行鸟)形目14种鸟的核型,并发现该目种类间染色体数目变异很大,由石(行鸟)的2n=40至沙锥的2n=98不等。这种变异是由原始的2n=80核型通过两种方式形成的:在(行鸟)小目中,小染色体相互融合而造成染色体数目的减少;在鹬小目中,大染色体的着丝点分离而造成染色体数目的增加。 展开更多
关键词 Hang形目 鸟纲 染色体组型
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形目12种鸟类线粒体细胞色素b基因序列差异及其系统发育关系
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作者 陈晓芳 王翔 +4 位作者 袁晓东 汤敏谦 李玉祥 郭玉梅 李庆伟 《Acta Genetica Sinica》 SCIE CAS CSCD 北大核心 2003年第5期419-424,共6页
采用PCR直接测序方法首次对形目 (Charadriiformes) 12种鸟类 :蒙古沙 (Charadriusmongolus)、环颈(Charadriusalexandrinus)、大杓鹬 (Numeniusmadagascariensis)、白腰杓鹬 (Numeniusarquata)、中杓鹬 (Numeniusphaeo pus)、红脚鹬 (T... 采用PCR直接测序方法首次对形目 (Charadriiformes) 12种鸟类 :蒙古沙 (Charadriusmongolus)、环颈(Charadriusalexandrinus)、大杓鹬 (Numeniusmadagascariensis)、白腰杓鹬 (Numeniusarquata)、中杓鹬 (Numeniusphaeo pus)、红脚鹬 (Tringatotanus)、林鹬 (Tringaglareola)、翘嘴鹬 (Xenuscineres)、翻石鹬 (Arenariainterpres)、大滨鹬 (Calidristenuirostris)、反嘴鹬 (Recurvirostraavosetts)和砺鹬 (Haematopusostralensis)线粒体cytb基因全序列进行测定 ,并以白鹳(Ciconiaciconia)的同源序列作为外群构建系统发生树。经比对 ,形目 12种鸟类线粒体cytb基因全序列均包括1143bp ,序列间未见有插入和缺失 ,共有 381个变异位点 ,种间序列差异值为 5 16 %~ 16 0 1%。重建的系统树将形目 12种鸟类分为 2个支系 :第 1支系包括红脚鹬、林鹬、翻石鹬、大滨鹬、翘嘴鹬、中杓鹬、大杓鹬和白腰杓鹬 ,其中红脚鹬、林鹬、翻石鹬、大滨鹬、翘嘴鹬聚为一支 ,中杓鹬、大杓鹬和白腰杓鹬聚为另一支 ;第 2支系包括蒙古沙、环颈、反嘴鹬和砺鹬 ,其中反嘴鹬与砺鹬互为姐妹群 ,然后再与属的两个种蒙古沙和环颈组成的姐妹群构成并系群。分子证据提示 :第 1支系中各属间及种间的系统关系与形态学研? 展开更多
关键词 Hang形目 CYTB基因 DNA序列 系统进化
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黄河三角洲国家级自然保护区形目鸟类迁徙规律的研究 被引量:3
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作者 赵长征 吕卷章 +6 位作者 朱书玉 赵连生 徐茂水 杜相海 王立东 于海玲 单凯 《山东林业科技》 北大核心 2000年第5期6-9,共4页
对黄河三角洲国家级自然保护区形目鸟类迁徙规律的研究发现 :目鸟类不同种的迁徒时间、顺序是较为固定的 ,并具有各自的高峰期 ;就其群落而言 ,也有迁徙高峰期出现 ,并且在其迁徙过程中 。
关键词 黄河三角洲 自然保护区 hang形目 鸟类 迁徒规律
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黄河三角洲国家级自然保护区形目鸟类食性及觅食地的研究 被引量:2
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作者 朱书玉 吕卷章 +6 位作者 赵长征 杜相海 徐茂水 赵连生 于海玲 王立东 单凯 《山东林业科技》 北大核心 2000年第5期10-13,共4页
对山东黄河三角洲国家级自然保护区形目鸟类的食性、觅食地质量、食物量与形目鸟类的关系及鸟类在不同觅食地的分布等的研究表明 :形目鸟类单位面积的数量与觅食地底栖生物的生物量呈正相关。
关键词 黄河三角洲 自然保护区 hang形目鸟类 食性 觅食地
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萧伯纳名言集锦(3)(英文)
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作者 张顺生 《大学英语》 2015年第3期41-41,共1页
21.What we want is to see the child in pursuit of knowledge,and not knowledge in pur suit of the child.22.It is most unwise for people in love to marry.23.Behind every successful man,there is a woman and behind every ... 21.What we want is to see the child in pursuit of knowledge,and not knowledge in pur suit of the child.22.It is most unwise for people in love to marry.23.Behind every successful man,there is a woman and behind every unsuccessful there are two.24.There is only one religion,though there are a hundred versions of it. 展开更多
关键词 RELIGION 萧伯纳 PURSUIT hundred behind responsibility faster woman HANGING RELATIVES
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口诀速记英语知识(三)
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作者 尹继友 《英语自学》 2006年第10期21-22,共2页
关键词 非谓语动词 现在分词 定语从句 关系代词 thousand 高考题 字母组合 hanged hund
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黄斑苇■繁殖期种群分布型的研究 被引量:3
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作者 马世全 《生态学报》 CAS CSCD 北大核心 1990年第4期362-366,共5页
黄斑苇鹊是夏候鸟,每年5—8月在上海奉贤县沿海新海塘繁殖。本文对其繁殖期种群分布型等进行研究,并用Poisson法测定。研究表明该种鸟巢的空间分布属于集群型。集群分布之巢占64.04%;每群6.08±1.76只,结构较为松散。其巢的空间生... 黄斑苇鹊是夏候鸟,每年5—8月在上海奉贤县沿海新海塘繁殖。本文对其繁殖期种群分布型等进行研究,并用Poisson法测定。研究表明该种鸟巢的空间分布属于集群型。集群分布之巢占64.04%;每群6.08±1.76只,结构较为松散。其巢的空间生态位是芦苇层次中的中层。文中还讨论了生态位层次之间的关系以及生态位分离、种群密度和种群数量变动等问题。 展开更多
关键词 黄斑苇Hang 繁殖 种群分布型
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Hemi-hepatectomy in pediatric patients using two-surgeon technique and a liver hanging maneuver 被引量:9
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作者 Kyoko Mochizuki Susumu Eguchi +3 位作者 Ryuichiro Hirose Taiichiro Kosaka Mitsuhisa Takatsuki Takashi Kanematsu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第10期1354-1357,共4页
AIM: To evaluate the efficacy of the two-surgeon technique with the liver hanging maneuver (LHM) for hepatectomies in pediatric patients with hepatoblastoma. METHODS: Three pediatric patients with hepatoblastoma w... AIM: To evaluate the efficacy of the two-surgeon technique with the liver hanging maneuver (LHM) for hepatectomies in pediatric patients with hepatoblastoma. METHODS: Three pediatric patients with hepatoblastoma were enrolled in this study. Two underwent right hemi-hepatectomies and one underwent a left hemihepatectomy using the two-surgeon technique by means of saline-linked electric cautery (SLC) and the Cavitron Ultrasonic Surgical Aspirator (CUSA; Valleylab, Boulder, CO) and the LHM. RESULTS: The mean operative time during the parenchymal transections was 50 rain and the mean blood loss was 235 g. There was no bile leakage from the cut surface after surgery. No macroscopic or microscopic-positive margins were observed in the hepatic transections. CONCLUSION: The two-surgeon technique using SLC and CUSA with the LHM is applicable to even pediatric patients with hepatoblastoma. 展开更多
关键词 Two-surgeon technique Liver hanging maneuver HEPATOBLASTOMA HEPATECTOMY Pediatric surgery
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Preliminary analysis of the hanging wall effect and velocity pulse of the 5.12 Wenchuan earthquake 被引量:11
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作者 Liu Qifang and Li Xiaojun Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China Associate Professor Professor 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2009年第2期165-177,共13页
A preliminary study of the PGA attenuation, hanging wall effect and velocity pulse characteristics from the 2008 Wenchuan earthquake ofMS -8.0 is described in this paper. The study was carried out through analyses in ... A preliminary study of the PGA attenuation, hanging wall effect and velocity pulse characteristics from the 2008 Wenchuan earthquake ofMS -8.0 is described in this paper. The study was carried out through analyses in the time and frequency domains of main earthquake records. In the PGA attenuation study, records from 316 stations less than 1000 km from the surface rupture of the fault were used as a database and attenuation relationships were developed and compared with some existing relationships that are widely used in China's Mainland, Chinese Taiwan and the US. At the same time, records from 28 stations less than 100 km from the fault were used to study the hanging wall effect and velocity pulse characteristics of this earthquake based on the distribution of PGA, PGV, spectral acceleration, and the velocity pulse peak, and the results are compared with the 1999 Chi-Chi earthquake. In addition, the large PGAs of the UD components observed in this event are also discussed in this paper. From the results of the preliminary study, some conclusions are developed and suggestions for further research are proposed. 展开更多
关键词 Wenchuan earthquake hanging wall effect velocity pulse ATTENUATION
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A Flexible-Segment-Model-Based Dynamics Calculation Method for Free Hanging Marine Risers in Re-Entry 被引量:10
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作者 徐雪松 王盛炜 《China Ocean Engineering》 SCIE EI 2012年第1期139-152,共14页
In re-entry, the drilling riser hanging to the holding vessel takes on a free hanging state, waiting to be moved from the initial random position to the wellhead. For the re-entry, dynamics calculation is often done t... In re-entry, the drilling riser hanging to the holding vessel takes on a free hanging state, waiting to be moved from the initial random position to the wellhead. For the re-entry, dynamics calculation is often done to predict the riser motion or evaluate the structural safety. A dynamics calculation method based on Flexible Segment Model (FSM) is proposed for free hanging marine risers. In FSM, a riser is discretized into a series of flexible segments. For each flexible segment, its deflection feature and external forces are analyzed independently. For the whole riser, the nonlinear governing equations are listed according to the moment equilibrium at nodes. For the solution of the nonlinear equations, a linearization iteration scheme is provided in the paper. Owing to its flexibility, each segment can match a long part of the riser body, which enables that good results can be obtained even with a small number of segments. Moreover, the linearization iteration scheme can avoid widely used Newton-Rapson iteration scheme in which the calculation stability is influenced by the initial points. The FSM-based dynamics calculation is timesaving and stable, so suitable for the shape prediction or real-time control of free hanging marine risers. 展开更多
关键词 dynamics calculation discretization method free hanging marine riser riser re-entry
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魟鱼骨素抗肿瘤作用的初步研究 被引量:12
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作者 郭斌 唐金中 贾玉海 《辽宁中医杂志》 CAS 2002年第6期368-369,共2页
研究鱼骨素 (RayCartilageExtract,RCE)抗肿瘤活性。选择S-180 移植瘤小鼠和人T淋巴细胞白血病细胞株 (CEM)作为研究对象 ,观察鱼骨素对荷瘤小鼠肿瘤和CEM细胞株群体增殖的影响 ,同时 ,结合病理学观察和CEM细胞表面标志表达的检测... 研究鱼骨素 (RayCartilageExtract,RCE)抗肿瘤活性。选择S-180 移植瘤小鼠和人T淋巴细胞白血病细胞株 (CEM)作为研究对象 ,观察鱼骨素对荷瘤小鼠肿瘤和CEM细胞株群体增殖的影响 ,同时 ,结合病理学观察和CEM细胞表面标志表达的检测。结果 ,0 2 5 %RCE、0 5 %RCE能明显抑制CEM细胞的群体增殖 ,增强CEM细胞表面标志CD2 、HLA -I分子的表达 ;1%RCE、2 %RCE能显著抑制小鼠局部移植瘤S-180 的生长 ,病理组织可见瘤细胞坏死明显。结论 :RCE具有较强的抗瘤活性。 展开更多
关键词 Hang鱼骨素 抗肿瘤 实验研究 药理
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A new approach to the surgical treatment of parasitic cysts of the liver:Hepatectomy using the liver hanging maneuver 被引量:4
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作者 Aydin Unal Yazici Pinar +2 位作者 Zeytunlu Murat Kilic Murat Coker Ahmet 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第28期3864-3867,共4页
AIM: To review 11 patients with parasitic cysts of the liver, who were treated by hepatic Iobectomy using the liver hanging maneuver (LHM).METHODS: Between January 2003 and June 2006, we retrospectively analyzed p... AIM: To review 11 patients with parasitic cysts of the liver, who were treated by hepatic Iobectomy using the liver hanging maneuver (LHM).METHODS: Between January 2003 and June 2006, we retrospectively analyzed patients who underwent surgical treatment due to parasitic cysts of the liver, at the Ege University School of Medicine, Department of General Surgery. Of these, the patients who underwent hepatic lobectomy using the LHM were reviewed and evaluated for surgical treatment outcome.RESULTS: Over a three-year period, there were 102 patients who underwent surgical treatment for parasitic cysts of the liver. Of these, 11 (10%) patients with parasitic cysts of the liver underwent hepatic Iobectomy using the LHM. Presenting symptoms were abdominal pain, dyspepsia, and cholangitis. Cyst locations were as follows: right lobe filled with cyst, 7 (63%); segmental location, 2 (18%); and multiple locations, 2 patients (18%). All patients underwent hepatic Iobectomy with an anterior approach using the LHM. The intraoperative blood transfusion requirement was one unit for 3 patients and two units for one patient. Postoperative complications included pulmonary atelectasy (2, 18%) and pleural effusion (2, 18%). No significant morbidity or mortality was observed.CONCLUSION: We concluded that hepatic Iobectomy using the LHM should be considered, not only for hepatic tumors or donor hepatectomy, but also to treat parasitic cysts of the liver. 展开更多
关键词 Hydatic cyst Hepatic lobectomy Intraoperative ultrasonography Liver hanging maneuver Bimanual-bifinger liver hanging maneuver
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Failure of hanging roofs in sublevel caving by shock collision and stress superposition 被引量:6
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作者 Zong-Xian Zhang 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2016年第6期886-895,共10页
Hanging roofs or high hang-ups.a common problem in sublevel caving mining,usually result in a large ore loss and undermine mining safety.This paper analyzed the formation of a hanging roof and showed that increased co... Hanging roofs or high hang-ups.a common problem in sublevel caving mining,usually result in a large ore loss and undermine mining safety.This paper analyzed the formation of a hanging roof and showed that increased confining pressure and reduced free surface were its main characteristics.In order to break down a hanging roof,a new method based on shock wave collision and stress superposition was developed.In this method,two blastholes containing multi-primer at different positions are simultaneously initiated at first.By doing this,a new free surface and a swell room can be created.After these holes are fired,a long delay time is given to the next blasthole so that the fragments from the first twohole blasting have enough time to fall down.This new method was applied to three hanging roofs in one production area,and all of them were successfully broken down.Field inspection indicated that almost no damage was caused in the nearby drifts/tunnels due to the new method.In addition,the far field vibrations were found to be smaller than the maximum vibrations induced by some other blasts. 展开更多
关键词 Shock wave collision Hanging roof Sublevel caving Rock fracture HANG-UP Underground mining
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Pancreaticoduodenectomy with early superior mesenteric artery dissection 被引量:4
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作者 Xu, Yu-Fei Liu, Zuo-Jin Gong, Jian-Ping 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS 2010年第6期579-583,共5页
BACKGROUND: Pancreatic adenocarcinoma remains the fourth leading cause of cancer-related death and is one of the most aggressive human tumors. At present, surgical resection is the only potentially curative treatment.... BACKGROUND: Pancreatic adenocarcinoma remains the fourth leading cause of cancer-related death and is one of the most aggressive human tumors. At present, surgical resection is the only potentially curative treatment. Early neck division is inadequate when invasion of the superior mesenteric artery (SMA) is suspected or in cases of replaced or accessory right hepatic artery. Malignant periampullary tumors often invade retroperitoneal peripancreatic tissues and a positive resection margin is associated with a poor long-term survival. DATA SOURCES: English-language medical databases, PubMed, ELSEVIER and SPRINGERLINK, were searched for articles on 'posterior approach pancreaticoduodenectomy', 'superior mesenteric artery first approach', 'retroperitoneal tissue', 'hanging maneuver', and related topics. RESULTS: The modification allowed the surgeon to early identify the nonresectability of a replaced right hepatic artery if present, enabling complete dissection of the right side of the SMA and portal vein as well as complete excision of the retroportal pancreatic lamina. CONCLUSION: Pancreaticoduodenectomy with early retropancreatic dissection is a useful and safe technical variant, which is indicated for the improvement of the safety and curative effect of the procedure. (Hepatobiliary Pancreat Dis Int 2010; 9: 579-583) 展开更多
关键词 PANCREATICODUODENECTOMY superior mesenteric artery retroperitoneal peripancreatic tissue hanging maneuver
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Trends in suicide by hanging, strangulation, and suffocation in Serbia, 1991-2020: A joinpoint regression and age-period-cohort analysis 被引量:4
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作者 Milena Ilic Irena Ilic 《World Journal of Psychiatry》 SCIE 2022年第3期505-520,共16页
BACKGROUND Hanging is one of the most commonly used methods for suicide in both sexes worldwide.In a number of countries,hanging mortality has increased over the last decades.Nevertheless,there is a scarcity of studie... BACKGROUND Hanging is one of the most commonly used methods for suicide in both sexes worldwide.In a number of countries,hanging mortality has increased over the last decades.Nevertheless,there is a scarcity of studies that have explored the patterns and trends for mortality of suicide by hanging on global,regional and national levels,as most evaluations are limited to certain populations.AIM To assess the trends of suicide mortality by hanging,strangulation,and suffocation in Serbia,from 1991 to 2020.METHODS This nationwide study,with epidemiological descriptive study design,was carried out based on official data.The age-standardized rates(ASRs,expressed per 100000 persons)were calculated by direct standardization,using the World Standard Population.Mortality trends from suicide by hanging were assessed using the joinpoint regression analysis:The average annual percent change(AAPC)with the corresponding 95%confidence interval(95%CI)was calculated.Age-period-cohort analysis was performed to address the possible underlying reasons for the observed suicide trends.RESULTS Over the 30-year period studied,there were 24340 deaths by hanging(17750 males and 6590 females)in Serbia.In 2020,the ASR of deaths by hanging was 4.5 per 100000 persons in both sexes together(7.6 in males vs 1.7 in females).The trends of suicide mortality by hanging decreased significantly between 1991 and 2020 in both males(AAPC=-1.7%per year;95%CI:-2.0 to-1.4)and females(AAPC=-3.5%per year;95%CI:-3.9 to-3.1).Mortality rates of suicide by hanging had a continuously decreasing tendency in both sexes together in all age groups:The only exception was among males in 40-49 age group,with an increasing trend of suicide by hanging from 1991 to 2011(by+0.3%per year).CONCLUSION The trends in suicide mortality by hanging have been decreasing in Serbia in the last three decades in both sexes,but this was more pronounced in women than in men.Despite the decreasing trends observed in mortality of suicide by hanging,further research is needed for better clarification of trends and help in suicide prevention in the future. 展开更多
关键词 SUICIDE HANGING MORTALITY TRENDS Joinpoint analysis
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