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| 1 | Light-absorbing impurities on Keqikaer Glacier in western Tien Shan: concentrations and potential impact on albedo reduction显示文摘Light-absorbing impurities on glaciers are important factors that influence glacial surface albedo and accelerate glacier melt. In this study, the quantity of light-absorbing impurities on Keqikaer Glacier in western Tien Shan, Central Asia, was measured. We found that the average concentrations of black carbon was 2,180 ng/g, with a range from 250 ng/g to more than 10,000 ng/g. The average concentrations of organic carbon and mineral dust were 1,738 ng/g and 194 μg/g, respectively. Based on simulations performed with the Snow Ice Aerosol Radiative model simulations, black carbon and dust are responsible for approximately 64% and 9%, respectively, of the albedo reduction, and are associated with instantaneous radiative forcing of 323.18 W/m2(ranging from 142.16 to 619.25 W/m2) and 24.05 W/m2(ranging from 0.15 to69.77 W/m2), respectively. For different scenarios, the albedo and radiative forcing effect of black carbon is considerably greater than that of dust. The estimated radiative forcing at Keqikaer Glacier is higher than most similar values estimated by previous studies on the Tibetan Plateau, perhaps as a result of black carbon enrichment by melt scavenging. Light-absorbing impurities deposited on Keqikaer Glacier appear to mainly originate from central Asia, Siberia, western China(including the Taklimakan Desert) and parts of South Asia in summer, and from the Middle East and Central Asia in winter.A footprint analysis indicates that a large fraction(>60%) of the black carbon contributions on Keqikaer Glacier comes from anthropogenic sources. These results provide a scientific basis for regional mitigation efforts to reduce black carbon. | YuLan Zhang ShiChang Kang Min Xu Michael Sprenger TanGuang Gao ZhiYuan Cong ChaoLiu Li JunMing Guo ZhiQiang Xu Yang Li Gang Li XiaoFei Li YaJun Liu HaiDong Han | 2017 | Research in Cold and Arid Regions2017,9,2: | 4 |
| 2 | The Hydrogen (δD) and Oxygen (δ 18 O) Isotopic Composition of Yemen’s Rainwater显示文摘 | Ahmed Al-ameri Michael Schneider Naif Abu Lohom Christoph Sprenger | 2014 | Arabian Journal for Science and Engineering2014,,1: | 1 |
| 3 | Optimal Lymph Node Harvest in Rectal Cancer (UICC Stages II and III) after Preoperative 5-FU–based Radiochemotherapy. Acetone Compression is a New and Highly Efficient Method显示文摘 | Anastasia Gehoff Oliver Basten Thilo Sprenger Lena-Christin Conradi Carsten Bismarck Dirk Bandorski Sabine Merkelbach-Bruse Regine Schneider-Stock Robert Stoehr Ralph M. Wirtz Julia Kitz Annegret Müller Arndt Hartmann Heinz Becker B. Michael Ghadimi Torst | 2012 | The American Journal of Surgical Pathology2012,,2: | 1 |
| 4 | Overview of clinical forensic services in various countries of the European Union显示文摘Examination of a person who has been a victim of a physical or sexual assault may be very important for upcoming legal proceedings.In the context of a clinical forensic examination,physical findings are recorded and biological trace material is gathered and secured.Ideally,all forensic findings are documented in a detailed report combined with photographic docu-mentation,which employs a forensic scale to depict the size of the injuries.However,the integrity of such forensic findings depends particularly on two factors.First,the examination needs to be conducted professionally to ensure that the findings are properly admissible as court evidence.Second,the examination should take place as soon as possible because the opportunity to successfully secure biological samples declines rapidly with time.Access to low-threshold clinical forensic examinations is not evenly provided in all member states of the European Union(EU);in some states,they are not available at all.As part of the JUST_(e)U!(Juridical standards for clinical forensic examinations of victims of violence in Europe)pro-ject,the Ludwig Boltzmann Institute for Clinical Forensic Imaging in Graz,Austria created(in cooperation with its international partner consortium)a questionnaire:the purpose was to collect information about support for victims of physical and/or sexual assault in obtaining a low-threshold clinical forensic examination in various countries of the EU.Our paper pro-vides a summary of the responses and an overview of the current situation concerning pro-vided clinical forensic services. | Sophie Kerbacher Michael Pfeifer Reingard Riener-Hofer Andrea Berzlanovich Maeve Eogan Anita Gali(c)Mihic Gregor Haring Petr Hejna Johannes Höller Sorin Hostiuc Michael Klintschar Peter Kovác Astrid Krauskopf Simone Leski Michal Malacka Thorsten Schwark Hanna Sprenger Andrea Verzeletti Duarte Nuno Vieira Sylvia Wolf Kathrin Yen | 2020 | Forensic Sciences Research2020,5,1: | 1 |
| 5 | Lymph Node Metastases in Rectal Cancer After Preoperative Radiochemotherapy: Impact of Intramesorectal Distribution and Residual Micrometastatic Involvement显示文摘 | Thilo Sprenger Hilka Rothe Heinz Becker Tim Beissbarth Kia Homayounfar Korbinian Gauss Julia Kitz Hendrik Wolff Andreas H. Scheel Michael Ghadimi Claus R?del Lena-Christin Conradi Torsten Liersch | 2013 | The American Journal of Surgical Pathology2013,,8: | 1 |
| 6 | Dynamical Tropopause Variability and Potential Vorticity Streamers in the Northern Hemisphere——A Climatological Analysis显示文摘这研究介绍在北半球的溪流 ers 在 ERA-40 分析数据集的分析之上基于的潜在的涡度(PV ) 的 44 年的气候学。15 年的气候学产出的比较到存在在 PV streamer 频率最大值的地点的很好的同意,而是一些差别在频率的振幅被发现。气候学与在 PV streamer 频率之间的连接的焦点被估计并且摘要 -- 并且动态对流顶层的行星规模的可变性。全面概述在在哪儿上被提供(地带地) 并且当(季节联盟者) 在整个热带以外、亚热带的对流顶层的短期的可变性被提高或减少时。影响这可变性的几个关键过程被讨论。例如, Baroclinic 过程在冬季在暴风雨轨道区域决定可变性,而亚洲夏季风显著地在亚洲上影响可变性。纸也在热带以外、副热带的对流顶层和三个主要北半球电视连接模式描述在 PV 溪流 ers 的频率之间的连接。在 PV streamer 频率的观察变化是仔细与在对流顶层区域以内的 PV 和它的坡度的伴随物变化有关。在北方大西洋摆动的相反的阶段期间, streamer 频率最大值的地点在两个在大西洋和欧洲区域显著地变额外热带并且画热带。streamer 频率上的 ENSO 的影响最在副热带的太平洋被读。 | Olivia MARTIUS Cornelia SCHWIERZ Michael SPRENGER | 2008 | Advances in Atmospheric Sciences2008,25,3: | 1 |
| 7 | One-year outcome of percutaneous mitral valve repair in patients with severe symptomatic mitral valve regurgitation显示文摘AIM To investigate one-year outcomes after percutaneous mitral valve repair with Mitra Clip~? in patients with severe mitral regurgitation(MR). METHODS Our study investigated consecutive patients with symptomatic severe MR who underwent Mitra Clip~?implantation at the University Hospital Bergmannsheil from 2012 to 2014. The primary study end-point was all-cause mortality. Secondary end-points were degree of MR and functional status after percutaneous mitral valve repair.RESULTS The study population consisted of 46 consecutive patients(mean logistic Euro SCORE 32% ± 21%). The degree of MR decreased significantly(severe MR before Mitra Clip~? 100% vs after Mitra Clip~? 13%; P < 0.001),and the NYHA functional classes improved(NYHA III/IV before Mitra Clip~? 98% vs after Mitra Clip~? 35%; P < 0.001). The mortality rates 30 d and one year after percutaneous mitral valve repair were 4.3% and 19.5%,respectively. During the follow-up of 473 ± 274 d,11 patients died(90% due to cardiovascular death). A preprocedural plasma B-type natriuretic peptide level > 817 pg/m L was associated with all-cause mortality(hazard ratio,6.074; 95%CI: 1.257-29.239; P = 0.012).CONCLUSION Percutaneous mitral valve repair with Mitra Clip~? has positive effects on hemodynamics and symptoms. Despite the study patients' multiple comorbidities and extremely high operative risk,one-year outcomes after Mitra Clip~? are favorable. Elevated B-type natriuretic peptide levels indicate poorer mid-term survival. | Michael Gotzmann Isabell Sprenger Aydan Ewers Andreas Mügge Leif Bosche | 2017 | World Journal of Cardiology2017,9,1: | 0 |
| 8 | Black Carbon Size in Snow of Chinese Altai Mountain in Central Asia显示文摘Black carbon(BC)in snow plays an important role to accelerate snow melting.However,current studies mostly focused on BC concentrations,few on their size distributions in snow which affected BC’s effect on albedo changes.Here we presented refractory BC(rBC)concentrations and size distributions in snow collected from Chinese Altai Mountains in Central Asia from November 2016 to April 2017.The results revealed that the average rBC concentrations were 5.77 and2.82 ng g-1for the surface snow and sub-surface snow,which were relatively higher in the melting season(April)than that in winter(November-January).The mass median volume-equivalent diameter of rBC size in surface snow was approximately at 120-150 nm,which was typically smaller than that in the atmosphere(about 200 nm for urban atmosphere).However,there existed no specific mass median volume-equivalent diameter of BC size for sub-surface snow in winter.While during the melting season,the median mass size of rBC in sub-surface snow was similar to that in surface snow.Backward trajectories indicated that anthropogenic sourced BC dominated rBC in snow(70%-85%).This study will promote our understanding on BC size distributions in snow,and highlight the possible impact of BC size on climate effect. | Yulan ZHANG Shichang KANG Tanguang GAO Michael SPRENGER Wei ZHANG Zhaoqing WANG | 2023 | Advances in Atmospheric Sciences2023,40,7: | 0 |