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Journal of Environmental Sciences 2022年第8期34卷 76-86页

作者： Theis Kragh Kaj Sand-jensen Emil Kristensen ole Pedersen Mikkel Madsen-Фterbye Department of Biology University of Southern DenmarkSyddanmark 5230Denmark Freshwater Biological Laboratory Department of BiologyUniversity of CopenhagenCopenhagen 2100Denmark

Throughout the freshwater continuum, Dissolved Organic Carbon(DOC) and the colored fraction, Chromophoric Dissolved Organic Material(CDOM), are continuously being added,removed, and transformed, resulting in changes in the chromophoricity and lability of organic matter over time. We examined, experimentally, the effect of increasing irradiationintensities on the combined photochemical and microbial degradation of CDOM and *** was done by using a simulated mixed water column: aged water from a humic lake was exposed to four irradiation-intensities – representing winter, early and late spring, and summer conditions(0.10, 0.16, 0.36, and 0.58 W/m^(2)) – and compared with dark controls over 37days. We found a linear relationship between CDOM degradation and irradiation-intensities up to 0.36 W/m^(2);the degradation rate saturated at higher intensities, both at specific wavelengths and for broader intervals. After 37 days at high irradiation-intensity, CDOM absorption of irradiation at 340 nm had been reduced by 41%;48% of DOC had been removed and DOC degradation continued to increase. Aromaticity(SUVA254) declined significantly over 37 days at the two lowest but not at the two highest UV-intensities;levels in unexposed control water remained constant. Direct observations of the humic lake showed that CDOM absorption of irradiation(340 nm) declined by 27% from winter to summer. A model based on hydrological CDOM input and CDOM degradation calculated from field measurements of UV-radiation and experimental CDOM degradation with UV-exposure from sunlight accurately predicted the annual course as observed in the lake. With no external CDOM input,92% of the CDOM could be degraded in a year. The results support the notion that combined photochemical and microbial CDOM degradation can be remarkably higher in lakes than previously thought and that humic lakes retain their color due to light absorption by ongoing CDOM input.

关键词： Biodegradation Brownification Carbon cycling CDOM DOC Humic lake Photobleaching UV-bleaching

Ecological speciation in Darwin＇s finches： Parsing the effects of magic traits

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Current Zoology 2013年第1期59卷 8-19页

作者： Jeffrey PODOS Rie DYBBOE Mads ole jensen Department of Biology University of Massachusetts Amherst MA 01003 USA Department of Biology University of Copenhagen The August Krogh Bldg. Universitetsparken 13 DK-2100 CopenhagenDenmark Horsens Statsskole Studenterwenget 2 7000 Horsens Denmark

Many recent studies of ecological speciation have focused on “magic trait” scenarios, in which divergent selection on viability traits leads inextricably to corresponding divergence in mechanisms, especially mate recognition systems, that facilitate assortative mating. Speciation however may also proceed via other scenarios, such as when populations experience directly selected or random divergence in mate recognition systems. The relative contributions of magic trait versus other scenarios for speciation remain virtually unexplored. The present study aims to test the relative contribution of the magic trait scenario in the divergence of populations of the medium ground finchGeospiza fortisof Santa Cruz Island, Galapagos. First, we assess differences inG. fortissong between a northern population (Borrero Bay) and a southeastern population (El Garrapatero), differences that we propose (along with other within-island geographic song variations) have arisen via scenarios that do not involve a magic trait scenario. Pairwise comparisons of raw and composite (PC) song parameters, as well as discriminant functions analyses, reveal significant patterns of song divergence between sites. Second, we test the ability of territorial males at Borrero Bay to discriminate songs from the two sites. We find thatG. fortismales can discriminate within-island song variants, responding more strongly to local than to “foreign” songs, along 3 raw and 1 composite response measures. Third, we compare these findings to prior data sets on song divergence and discrimination in Santa CruzG. fortis. These comparisons suggest that song divergence and discrimination are shaped less strongly by geographic sources than by morphological (beak-related) sources. We thus argue that interpopulation song divergence and discrimination, fundamental elements of assortative mating in Darwin’s finches, can be fostered in early stages of divergence under magic trait as well as alternative scenarios for speciatio

关键词：生态形态达尔文性状魔法解析识别系统相对贡献地理来源

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采用波纹管测试水泥基材料早期自收缩方法

硅酸盐学报 2009年第1期37卷 39-45页

作者：田倩 jensen ole Mejlhede 丹麦科技大学江苏省建筑科学研究院有限公司南京210008

用特制的波纹管模具,可以在塑性阶段以水平方向测长度的方式将体积应变转换为长度应变来测量,不仅能实现自浇注成型开始对水泥基材料自收缩的连续监测,而且可以有效避免重力、温度变化以及模具约束对于测试结果的影响。介绍了波纹管测... 详细信息

用特制的波纹管模具,可以在塑性阶段以水平方向测长度的方式将体积应变转换为长度应变来测量,不仅能实现自浇注成型开始对水泥基材料自收缩的连续监测,而且可以有效避免重力、温度变化以及模具约束对于测试结果的影响。介绍了波纹管测长度的原理,研究了波纹管的材质、尺寸和内部空气对于测试结果的影响。结果表明:测试结果受到波纹管材质、尺寸和成型引入空气的影响;随着波纹管内试件的刚度不断增加,其影响程度也随之减小,到终凝10 h后这种影响可以忽略不计。

关键词：混凝土自收缩波纹管测试方法

Real-time high-resolution mid-infrared optical coherence tomography

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Light(Science & Applications) 2019年第1期8卷 1076-1088页

作者： niels M.Israelsen Christian R.Petersen Ajanta Barh Deepak Jain Mikkel jensen Gunther Hannesschlager Peter Tidemand-Lichtenberg Christian Pedersen Adrian Podoleanu ole Bang DTU Fotonik Technical University of Denmark2800 KgsLyngbyDenmark nORBLIS IVS Virumgade 35 DVirum 2830Denmark Research Center for non-Destructive Testing(RECEnDT) Altenberger Straße 694040 LinzAustria nLIR ApS Hirsemarken 1Farum 3520Denmark Applied Optics Group School of Physical SciencesUniversity of KentCanterbury CT27NHUK

The potential for improving the penetration depth of optical coherence tomography systems by using light sources with longer wavelengths has been known since the inception of the technique in the early ***,the development of mid-infrared optical coherence tomography has long been challenged by the maturity and fidelity of optical components in this spectral region,resulting in slow acquisition,low sensitivity,and poor axial *** this work,a mid-infrared spectral-domain optical coherence tomography system operating at a central wavelength of 4μm and an axial resolution of 8.6μm is *** system produces two-dimensional cross-sectional images in real time enabled by a high-brightness 0.9-to 4.7-μm mid-infrared supercontinuum source with a pulse repetition rate of 1 MHz for illumination and broadband upconversion of more than 1-μm bandwidth from 3.58–4.63μm to 820–865 nm,where a standard 800-nm spectrometer can be used for fast *** images produced by the mid-infrared system are compared with those delivered by a state-of-the-art ultra-high-resolution near-infrared optical coherence tomography system operating at 1.3μm,and the potential applications and samples suited for this technology are *** doing so,the first practical mid-infrared optical coherence tomography system is demonstrated,with immediate applications in real-time non-destructive testing for the inspection of defects and thickness measurements in samples that exhibit strong scattering at shorter wavelengths.

关键词： resolution repetition illumination

MicroRnA-126 and epidermal growth factor-like domain 7 predict recurrence in patients with colon cancer treated with neoadjuvant chemotherapy

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Cancer Drug Resistance 2019年第3期2卷 885-896页

作者： Torben Frøstrup Hansen Anting Liu Carlsen Julia Tanas Tanassi ole Larsen Flemming Brandt Sørensen Lars Henrik jensen Anders Jakobsen Danish Colorectal Cancer Center South Vejle HospitalInstitute of Regional Health ResearchUniversity of Southern DenmarkVejle 7100Denmark Department of Autoimmunology and Biomarkers Statens Serum InstitutCopenhagen 2300Denmark Department of Congenital Disorders Statens Serum InstitutCopenhagen 2300Denmark Department of Oncology Herlev HospitalHerlev 2730Denmark University Institute of Pathology Aarhus University Hospitaland department of Clinical MedicineUniversity of AarhusAarhus 8200Denmark

Aim:neoadjuvant chemotherapy may represent a shift in the treatment of locally advanced colon *** angiogenic couple has-microRnA-126(miRnA-126)and epidermal growth factor-like domain 7(EGFL7)are transcribed from the same gene and regulates all aspects of angiogenesis and may influence the ability of tumor cells to *** aim was to analyze the relationship between miRnA-126 and EGFL7 and disease recurrence in patients with locally advanced colon cancer treated with neoadjuvant ***:This study included 71 patients from a phase II study all planned for three cycles of capecitabine and oxaliplatin before *** was sampled at baseline and right before and after the *** miRnA-126 was analysed by RT-qPCR and a quantitative immunoassay was used for the analyses of ***:The rates of 5-year disease-free survival(DFS)and overall survival(OS)were 80%and 85%,*** level of circulating miRnA-126 before the operation predicts recurrence,P=*** patients with values below and above the median the recurrence rate was 31%and 4%,*** results applied to EGFL7.A combined estimate identified a subgroup of patients(25 of 71)with no recurrence and a 5-year DFS and OS rate of 100%,***:MicroRnA-126 and EGFL7 are predictors for disease recurrence in patients with locally advanced colon cancer treated with neoadjuvant chemotherapy and may assist in selection of adjuvant chemotherapy.

关键词： Chemotherapy colon cancer epidermal growth factor-like domain 7 microRnA-126

Avian paramyxoviruses and avian influenza viruses in migratory waterfowl in Denmark 2002-2004

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Avian paramyxoviruses and avian influenza viruses in migrato...

Flow,pressure and vascular responsiveness

The 15th World Veterinary Poultry Congress

作者： Poul H.Jφrgensen ole R.Therkildsen Kurt jensen Handberg national Veterinary Institute Technical University of DenmarkDepartment of PoultryFish and Fur AnimalsHangoevej 2DK-8200 Aarhus NDenmark national Environmental Research Institute Department of Wildlife Ecology and BiodiversityUniversity ofAarhusGrenaavej 12DK-8410 RoendeDenmark. national Environmental Research Institute Department of Wildlife Ecology and BiodiversityUniversity ofAarhusGrenaavej 12.DK-8410 RoendeDenmark.National Veterinary InstituteTechnical University of DenmarkDepartment of PoultryFish and Fur AnimalsHangoevej 2DK-8200 Aarhus NDenmark

＜正＞Due to increasing concern of transmission of Avian Paramyxoviruses（APMV）and Avian Influenza（AI） viruses from wild birds to domestic poultry samples collected from wild migratory waterfowl in Denmark are inve...

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Flow,pressure and vascular responsiveness

11th International Vascular neuroeffector Mechanisms and Cardiovascular Pharmacology and Medicine Symposia, Shanghai-Suzhou 2006

作者： Lasse E.Rasmussen Paul M.Vanhoutte Boye L.jensen ole Skott Physiology and Pharmacology University of Southern Denmark Winslowparken 21.3 Oefense C 5000 Denmark Physiology and Pharmacology University of Southern Denmark Winslowparken 21.3 Oefense C 5000 Denmark Physiology and Pharmacology University of Southern Denmark Winslowparken 21.3 Oefense C 5000 Denmark Physiology and Pharmacology University of Southern Denmark Winslowparken 21.3 Oefense C 5000 Denmark

Unidirectional endothelial shear stress is supposed to maintain a continuous release of nitric oxide.[1-3]. Consistent with this, low wall shear stress is associated with endothelial dysfunction in patients with peripheral artery disease or abdominal aortic aneurysm[4]. However in rabbit aorta perfused ex vivo [5] chronic shear stress does not stimulate enOS. . Thus, the effect of flow on endothelial function in large vessels is unresolved. Therefore experiments were

关键词： Flow,pressure and vascular responsiveness

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中国式海塘的水力性能

水利水运科学研究 1989年第1期 13-23页

作者：余广明 Jorgen Juhl ole Juul jensen 河港研究所丹麦水工研究所

本文叙述了中国式海塘的水工试验研究成果。研究内容包括:(1)作额在胸墙上的波浪力和力矩;(2)越过堤顶的水量。试验所采用的建筑物系上海海塘的一个斜坡式典型断面。模型中同时复演了风和不规则波。试验范围包括水位、有效波高、谱峰周... 详细信息

本文叙述了中国式海塘的水工试验研究成果。研究内容包括:(1)作额在胸墙上的波浪力和力矩;(2)越过堤顶的水量。试验所采用的建筑物系上海海塘的一个斜坡式典型断面。模型中同时复演了风和不规则波。试验范围包括水位、有效波高、谱峰周期与风速的各种不同组合。谱形采用JOnSWAP波谱。本文成果有助于了解中国及其他国家类似建筑物的水力性能,对试验所采用的上海海塘典型断面的抗浪能力,提出科学判断依据,并可供同类型的海塘工程设计参考应用。

关键词：海塘水力性能中国式

Shot-noise limited, supercontinuum-based optical coherence tomography

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Light(Science & Applications) 2021年第7期10卷 1372-1384页

作者： Shreesha Rao D.S. Mikkel jensen Lars Grüner-nielsen Jesper Toft Olsen Peter Heiduschka Björn Kemper Jürgen Schnekenburger Martin Glud Mette Mogensen niels Møller Israelsen ole Bang DTU Fotonik Dept.of Photonics EngineeringTechnical University of DenmarkØrsteds Plads2800 Kongens LyngbyDenmark nKT Photonics A/S Blokken 843460 BirkerødDenmark Department of Ophthalmology University of Münster Medical CentreDomagkstr.15D-48149 MünsterGermany Biomedical Technology Center of the Medical Faculty University of MünsterMendelstr.17D-48149 MünsterGermany Department of Dermatology Bisbebjerg HospitalUniversity of CopenhagenBispebjerg Bakke 232400 Copenhagen NVDenmark

We present the first demonstration of shot-noise limited supercontinuum-based spectral domain optical coherence tomography(SD-OCT)with an axial resolution of 5.9μm at a center wavelength of 1370 *** supercontinuumbased SD-OCT systems cannot be operated in the shot-noise limited detection regime because of severe pulse-topulse relative intensity noise of the supercontinuum *** overcome this disadvantage,we have developed a low-noise supercontinuum source based on an all-normal dispersion(AnDi)fiber,pumped by a femtosecond *** noise performance of our 90 MHz AnDi fiber-based supercontinuum source is compared to that of two commercial sources operating at 80 and 320 MHz repetition *** show that the low-noise of the AnDi fiber-based supercontinuum source improves the OCT images significantly in terms of both higher contrast,better sensitivity,and improved *** SD-OCT imaging of skin,retina,and multilayer stacks we conclude that supercontinuumbased SD-OCT can enter the domain of shot-noise limited detection.

关键词： fiber optical pumped