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| 1 | 受访者推动抽样:研究隐藏人口的方法与实践显示文摘“隐藏人口”的特点是规模较小且成员一般不愿暴露身份,因此很难使用常规抽样方法对其进行研究。近年来出现了一种新的研究隐藏人口的方法——受访者推动抽样(RDS)方法,该方法在传统“雪球抽样”方法的基础上,结合社会网络分析的理论和方法,使研究者有可能根据样本对总体特征做出合理的推论。本文对RDS方法的理论渊源、基本思路、主要操作步骤和原理进行了简要介绍,并探讨了在实际操作过程中应注意的问题。 | 赵延东 Jon Pedersen | 2007 | 社会2007,27,2: | 44 |
| 2 | Plasma Membrane H^+-ATPase Regulation in the Center of Plant Physiology显示文摘血浆膜(下午) H +-ATPase 是在植物房间膜的重要离子泵。由渗出从房间的质子并且产生一个膜潜力,这泵给与能量 PM,它是为生长的一个前提。autoinhibitory 终端域的修正激活下午 H +-ATPase 活动, andon 这 basisit 被假设了这些规章的终点是为激活或禁止质子抽的生理的因素的目标。在这评论,我们在进化、生理的上下文集中于 PM H +-ATPase 的 posttranslational 规定和泵的地方规定。新兴的图画是调整植物生长的多重信号防碍 PM H +-ATPase 的 posttranslational 规定。 | Janus Falhof Jesper Torbol Pedersen Anja Thoe Fuglsang Michael Palmgren | 2016 | Molecular Plant2016,9,3: | 27 |
| 3 | Inflammatory pathways of importance for management of inflammatory bowel disease显示文摘Inflammatory bowel disease(IBD)is a group of chronic disorders of the gastrointestinal tract comprising Crohn’s disease(CD)and ulcerative colitis(UC).Their etiologies are unknown,but they are characterised by an imbalanced production of pro-inflammatory mediators,e.g.,tumor necrosis factor(TNF)-α,as well as increased recruitment of leukocytes to the site of inflammation.Advantages in understanding the role of the inflammatory pathways in IBD and an inadequate response to conventional therapy in a large portion of patients,has over the last two decades lead to new therapies which includes the TNF inhibitors(TNFi),designed to target and neutralise the effect of TNF-α.TNFi have shown to be efficient in treating moderate to severe CD and UC.However,convenient alternative therapeutics targeting other immune pathways are needed for patients with IBD refractory to conventional therapy including TNFi.Indeed,several therapeutics are currently under development,and have shown success in clinical trials.These include antibodies targeting and neutralising interleukin-12/23,small pharmacologic Janus kinase inhibitors designed to block intracellular signaling of several pro-inflammatory cytokines,antibodies targeting integrins,and small anti-adhesion molecules that block adhesion between leukocytes and the intestinal vascular endothelium,reducing their infiltration into the inflamed mucosa.In this review we have elucidated the major signaling pathways of clinical importance for IBD therapy and highlighted the new promising therapies available.As stated in this paper several new treatment options are under development for the treatment of CD and UC,however,no drug fits all patients.Hence,optimisations of treatment regimens are warranted for the benefit of the patients either through biomarker establishment or other rationales to maximise the effect of the broad range of mode-of-actions of the present and future drugs in IBD. | Jannie Pedersen Mehmet Coskun Christoffer Soendergaard Mohammad Salem Ole Haagen Nielsen | 2014 | World Journal of Gastroenterology2014,20,1: | 28 |
| 4 | 吊索训练对高水平足球运动员平衡能力、踢球速度和躯干(肌肉力量)稳定性的改善显示文摘 | Stray Pedersen J. I Magnussen R Kuffel E. Seiler S 周瑾(译) | 2007 | 北京体育大学学报2007,30,6: | 26 |
| 5 | Ehealth:Low FODMAP diet vs Lactobacillus rhamnosus GG in irritable bowel syndrome显示文摘AIM:To investigate the effects of a low fermentable,oligosaccharides,disaccharides,monosaccharides and polyols diet(LFD)and the probiotic Lactobacillus rhamnosus GG(LGG)in irritable bowel syndrome(IBS).METHODS:Randomised,unblinded controlled trial on the effect of 6-wk treatment with LFD,LGG or a normal Danish/Western diet(ND)in patients with IBS fulfilling Rome III diagnostic criteria,recruited betweenNovember 2009 and April 2013.Patients were required to complete on a weekly basis the IBS severity score system(IBS-SSS)and IBS quality of life(IBS-QOL)questionnaires in a specially developed IBS web selfmonitoring application.We investigated whether LFD or LGG could reduce IBS-SSS and improve QOL in IBS patients.RESULTS:One hundred twenty-three(median age 37years,range:18-74 years),90(73%)females were randomised:42 to LFD,41 to LGG and 40 to ND.A significant reduction in mean±SD of IBS-SSS from baseline to week 6 between LFD vs LGG vs ND was revealed:133±122 vs 68±107,133±122 vs 34±95,P<0.01.Adjusted changes of IBS-SSS for baseline covariates showed statistically significant reduction of IBS-SSS in LFD group compared to ND(IBS-SSS score75;95%CI:24-126,P<0.01),but not in LGG compared to ND(IBS-SSS score 32;95%CI:18-80,P=0.20).IBS-QOL was not altered significantly in any of the three groups:mean±SD in LFD 8±18 vs LGG 7±17,LFD 8±18 vs ND 0.1±15,P=0.13.CONCLUSION:LFD is efficacious for patients with IBS. | Natalia Pedersen Nynne Nyboe Andersen Zsuzsanna Végh Lisbeth Jensen Dorit Vedel Ankersen Maria Felding Mette Hestetun Simonsen Johan Burisch Pia Munkholm | 2014 | World Journal of Gastroenterology2014,20,43: | 16 |
| 6 | Low-FODMAP diet reduces irritable bowel symptoms in patients with inflammatory bowel disease显示文摘AIM To investigate the effect of a low-FODMAP diet on irritable bowel syndrome(IBS)-like symptoms in patients with inflammatory bowel disease(IBD).METHODS This was a randomised controlled open-label trial of patients with IBD in remission or with mild-to-moderate disease and coexisting IBS-like symptoms(Rome III) randomly assigned to a Low-FODMAP diet(LFD) or a normal diet(ND) for 6 wk between June 2012 andDecember 2013. Patients completed the IBS symptom severity system(IBS-SSS) and short IBD quality of life questionnaire(SIBDQ) at weeks 0 and 6. The primary end-point was response rates(at least 50-point reduction) in IBS-SSS at week 6 between groups; secondary end-point was the impact on quality of life. RESULTS Eighty-nine patients, 67(75%) women, median age 40, range 20-70 years were randomised: 44 to LFD group and 45 to ND, from which 78 patients completed the study period and were included in the final analysis(37 LFD and 41 ND). There was a significantly larger proportion of responders in the LFD group(n = 30, 81%) than in the ND group(n = 19, 46%);(OR = 5.30; 95%CI: 1.81-15.55, P < 0.01). At week 6, the LFD group showed a significantly lower median IBSSSS(median 115; inter-quartile range [IQR] 33-169) than ND group(median 170, IQR 91-288), P = 0.02. Furthermore, the LFD group had a significantly greater increase in SIBDQ(median 60, IQR 51-65) than the ND group(median 50, IQR 39-60), P < 0.01.CONCLUSION In a prospective study, a low-FODMAP diet reduced IBS-like symptoms and increased quality of life in patients with IBD in remission. | Natalia Pedersen Dorit Vedel Ankersen Maria Felding Henrik Wachmann Zsuzsanna Végh Line Molzen Johan Burisch Jens Rikardt Andersen Pia Munkholm | 2017 | World Journal of Gastroenterology2017,23,18: | 15 |
| 7 | Effects of resveratrol in experimental and clinical non-alcoholic fatty liver disease显示文摘The prevalence of obesity and related conditions like non-alcoholic fatty liver disease(NAFLD) is increasing worldwide and therapeutic options are limited.Alternative treatment options are therefore intensively sought after.An interesting candidate is the natural polyphenol resveratrol(RSV) that activates adenosinmonophosphate-activated protein kinase(AMPK) and silent information regulation-2 homolog 1(SIRT1).In addition,RSV has known anti-oxidant and anti-inflammatory effects.Here,we review the current evidence for RSVmediated effects on NAFLD and address the different aspects of NAFLD and non-alcoholic steatohepatitis(NASH) pathogenesis with respect to free fatty acid(FFA) flux from adipose tissue,hepatic de novo lipogenesis,inadequate FFA β-oxidation and additional intra- and extrahepatic inflammatory and oxidant hits.We review the in vivo evidence from animal studies and clinical trials.The abundance of animal studies reports a decrease in hepatic triglyceride accumulation,liver weight and a general improvement in histological fatty liver changes,along with a reduction in circulating insulin,glucose and lipid levels.Some studies document AMPK or SIRT1 activation,and modulation of relevant markers of hepatic lipogenesis,inflammation and oxidation status.However,AMPK/SIRT1-independent actions are also likely.Clinical trials are scarce and have primarily been performed with a focus on overweight/obese participants without a focus on NAFLD/NASH and histological liver changes.Future clinical studies with appropriate design are needed to clarify the true impact of RSV treatment in NAFLD/NASH patients. | Sara Heebll Karen Louise Thomsen Steen B Pedersen Hendrik Vilstrup Jacob George Henning Grnbk | 2014 | World Journal of Hepatology2014,6,4: | 11 |
| 8 | 预变形结合人工时效对Al-Mg-Si合金力学性能的影响(英文)显示文摘研究预变形结合人工时效处理对AA6060铝合金强度和韧性的影响。对经过均匀化热处理和挤压加工的AA6060铝合金进行固溶处理,然后对材料实施0-10%的预变形并再进行时效处理或者在人工时效过程中进行同步变形。通过对不同时效处理后的合金的显微硬度和拉伸性能分析,发现预变形对材料的时效行为和力学性能有显著影响,它可以使合金的时效速度明显加快。比较预变形和同步变形对人工时效的影响发现,同步变形结合人工时效可以使该合金在更短的时间内得到更好的力学性能。对两种变形对时效行为的影响机理进行了探讨。 | Michal KOLAR Ketill Olav PEDERSEN Sverre GULBRANDSEN-DAHL Knut MARTHINSEN | 2012 | Transactions of Nonferrous Metals Society of China2012,22,8: | 10 |
| 9 | Effect of a 26-month floorball training on male elderly's cardiovascular fitness, glucose control, body composition, and functional capacity显示文摘Background: Floorball training offers a motivating and socially stimulating team activity for older adults, and 12 weeks of floorball training twice a week among men aged 65—76 years have been shown to have positive effects on a number of physiological parameters important for health. However, the effect of long-term participation in floorball training among male elderly has not been investigated. The aim of the present study was to examine the effect of 26-month self-organized regular participation in floorball training on cardiovascular fitness, body composition, blood lipids, glucose control, and physical function among recreationally active men aged 66—78 years.Methods: After completing a 12-week randomized and controlled intervention with floorball and petanque training in the autumn 2014 or spring2015, 15 subjects chose to participate in floorball training(floorball group, FG), whereas 16 subjects resumed their usual lifestyle(control group,CG). FG took part in self-organized floorball training 1.7 sessions of 40 min/week, and CG continued their normal recreationally active lifestyle during a 26-month follow-up period. At baseline and after the follow-up period subjects were tested for cardiovascular fitness, glucose control(resting blood samples), body composition dual-energy X-ray absorptiometry(DXA-scanning), and functional capacity.Results: In FG, the decline in maximal oxygen uptake(VO_(2max)) during the follow-up period was lower(242 ± 379 mL/min, p = 0.01), blood glycosylated hemoglobin(HbA1c) increased less(—1.6 ± 2.9 mmol/L, p = 0.02), and leg bone mineral density increased more(0.03 ± 0.05 g/cm^2,p = 0.02) than those in CG. The effects on body mass, total lean body mass, fat mass, blood lipids, and physical function were similar in FG and CG.Conclusion: Approximately twice weekly floorball sessions with 40 min/session over 26-month appear to reduce age-related decline in cardiovascular fitness and glucose control and improve leg bone mineral density, suggesting that long-term participation in floorball training can be considered as a health-enhancing activity in recreationally active male elderly. | Mogens Theisen Pedersen Jacob Vorup Jens Bangsbo | 2018 | Journal of Sport and Health Science2018,7,2: | 9 |
| 10 | Follow-up of patients with functional bowel symptoms treated with a low FODMAP diet显示文摘AIM: To investigate patient-reported outcomes from, and adherence to, a low FODMAP diet among patients suffering from irritable bowel syndrome and inflammatory bowel disease.METHODS: Consecutive patients with irritable bowel syndrome(IBS) or inflammatory bowel disease(IBD) and co-existing IBS fulfilling the ROME Ⅲ criteria, who previously attended an outpatient clinic for low FODMAP diet(LFD) dietary management and assessment by a gastroenterologist, were invited to participate in a retrospective questionnaire analysis. The questionnaires were sent and returned by regular mail and gathered information on recall of dietarytreatment, efficacy, symptoms, adherence, satisfaction, change in disease course and stool type, and quality of life. Before study enrolment all patients had to sign an informed written consent.RESULTS: One hundred and eighty patients were included, 131(73%) IBS and 49(27%) IBD patients. Median age was 43 years(range: 18-85) and 147(82%) were females. Median follow-up time was 16 mo(range: 2-80). Eighty-six percent reported either partial(54%) or full(32%) efficacy with greatest improvement of bloating(82%) and abdominal pain(71%). The proportion of patients with full efficacy tended to be greater in the IBD group than in the IBS group(42% vs 29%, P = 0.08). There was a significant reduction in patients with a chronic continuous disease course in both the IBS group(25%, P < 0.001) and IBD group(23%, P = 0.002) along with a significant increase in patients with a mild indolent disease course of 37%(P < 0.001) and 23%(P = 0.002), respectively. The proportion of patients having normal stools increased with 41% in the IBS group(P < 0.001) and 66% in the IBD group(P < 0.001). One-third of patients adhered to the diet and high adherence was associated with longer duration of dietary course(P < 0.001). Satisfaction with dietary management was seen in 83(70%) IBS patients and 24(55%) IBD patients. Eightyfour percent of patients lived on a modified LFD, where some foods rich in FODMAPs were reintroduced, and 16% followed the LFD by the book without deviations. Wheat, dairy products, and onions were the foods most often not reintroduced by patients.CONCLUSION: These data suggest that a diet low in FODMAPs is an efficacious treatment solution in the management of functional bowel symptoms for IBS and IBD patients. | Louise Maagaard Dorit V Ankersen Zsuzsanna Végh Johan Burisch Lisbeth Jensen Natalia Pedersen Pia Munkholm | 2016 | World Journal of Gastroenterology2016,22,15: | 8 |
| 11 | Real-time high-resolution mid-infrared optical coherence tomography显示文摘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 1990s.Nevertheless,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 resolution.In 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 demonstrated.The 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 detection.The 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 discussed.In 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. | Niels M.Israelsen Christian R.Petersen Ajanta Barh Deepak Jain Mikkel Jensen Gunther Hannesschlager Peter Tidemand-Lichtenberg Christian Pedersen Adrian Podoleanu Ole Bang | 2019 | Light(Science & Applications)2019,8,1: | 7 |
| 12 | Frequency and Outcomes of Liver Transplantation for Nonalcoholic Steatohepatitis in the United States显示文摘 | Michael R. Charlton Justin M. Burns Rachel A. Pedersen Kymberly D. Watt Julie K. Heimbach Ross A. Dierkhising | 2011 | Gastroenterology2011,,4: | 7 |
| 13 | Ehealth monitoring in irritable bowel syndrome patients treated with low fermentable oligo-, di-, mono-saccharides and polyols diet显示文摘In the present study we report on changes in irritable bowel syndrome-severity scoring system(IBS-SSS)and irritable bowel syndrome-quality of life(IBS-QoL)in 19 IBS patients,aged 18 to 74 years(F/M:14/5),during 12 wk registering their symptoms on the webapplication(www.ibs.constant-care.dk).During a control period of the first 6-wk patients were asked to register their IBS-SSS and IBS-QoL on the web-application weekly without receiving any intervention.Thereafter,low fermentable oligo-,di-,mono-saccharides and polyols(FODMAP)diet(LFD)was introduced for the next6 wk while continuing the registration.Though a small sample size a significant improvement in disease activity(IBS-SSS)was observed during both the control period,median:278(range:122-377),P=0.02,and subsequently during the LFD period,median:151(range:29-334),P<0.01.The IBS-QoL solely changed significantly during the LFD period,median:67(37-120),P<0.01.The significant reduction in disease activity during the control period shows a positive effect of the web-application on IBS symptoms when presented as a'traffic light'.However adding the diet reduced IBSSSS to<150,inactive to mild symptoms.In the future results from larger scale trials are awaited. | Natalia Pedersen Zsuzsanna Vegh Johan Burisch Lisbeth Jensen Dorit Vedel Ankersen Maria Felding Nynne Nyboe Andersen Pia Munkholm | 2014 | World Journal of Gastroenterology2014,20,21: | 7 |
| 14 | 瑞典双生子人群2型糖尿病与非黑色素瘤皮肤癌关系的研究显示文摘目的探讨2型糖尿病与非黑色素瘤皮肤癌(non-melanoma skin cancer,NMSC)的关系,以及遗传和早期生活环境因素在该关联中的作用,为预防NMSC提供理论依据。方法于1998-2002年,对瑞典全国双生子登记系统中1958年及以前出生的41115名未患癌症者进行基线调查,通过电话访问收集研究对象的人口学特征、生活方式、人体测量指标以及疾病史(糖尿病史和糖尿病用药史)等信息,通过瑞典住院患者登记系统、药物使用登记系统和癌症登记系统随访收集从基线调查至2014年12月31日期间NMSC等疾病的发病信息。采用SPSS20.0软件进行独立样本t检验、χ^2检验和logistic回归分析,采用Stata13.0软件进行广义估计方程(generalized estimating equation,GEE)分析和条件logistic回归分析。结果随访期间共发生NMSC2372例(7.04%),NMSC组和非癌症组(31332例)平均年龄、体质指数(BMI)、受教育程度、双生子类型、婚姻状况、吸烟、过量饮酒和2型糖尿病患病情况的差异均有统计学意义(P<0.01)。以上述NMSC患者为病例组,非癌症者为对照组(非匹配设计),多因素GEE分析结果显示,2型糖尿病是NMSC的保护因素,有统计学意义(OR=0.740,95%CI:0.642~0.853,P<0.05)。然而,以双生子对子中患NMSC者为病例,另一非癌症的双生子为对照(配对设计),多因素条件logistic回归分析结果显示,2型糖尿病与NMSC的关联没有统计学意义(OR=0.914,95%CI:0.632~1.323,P>0.05)。两种分析方法得到的OR值的差异具有统计学意义(OR=0.805,95%CI:0.656~0.989,P<0.05)。结论2型糖尿病可能降低NMSC的发病风险,但该保护作用可能是由于遗传和早期生活环境因素导致的。 | 汪煜 杨蓉蓉 包翠萍 徐会 宋瑞雪 齐秀英 PEDERSEN Nancy L 徐卫历 | 2019 | 中国慢性病预防与控制2019,27,5: | 6 |
| 15 | Methods for the extraction and RNA profiling of exosomes显示文摘AIM:To develop protocols for isolation of exosomes and characterization of their RNA content.METHODS:Exosomes were extracted from He La cell culture media and human blood serum using the Total exosome isolation(from cell culture media)reagent,and Total exosome isolation(from serum)reagent respectively.Identity and purity of the exosomes was confirmed by Nanosight?analysis,electron microscopy,and Western blots for CD63 marker.Exosomal RNA cargo was recovered with the Total exosome RNA and protein isolation kit.Finally,RNA was profiled using Bioanalyzer and quantitative reverse transcriptionpolymerase chain reaction(q RT-PCR)methodology.RESULTS:Here we describe a novel approach for robust and scalable isolation of exosomes from cell culture media and serum,with subsequent isolation and analysis of RNA residing within these vesicles.The isolation procedure is completed in a fraction of the time,compared to the current standard protocols utilizing ultracentrifugation,and allows to recover fully intact exosomes in higher yields.Exosomes were found tocontain a very diverse RNA cargo,primarily short sequences 20-200 nt(such as mi RNA and fragments of m RNA),however longer RNA species were detected as well,including full-length 18S and 28S r RNA.CONCLUSION:We have successfully developed a set of reagents and a workflow allowing fast and efficient extraction of exosomes,followed by isolation of RNA and its analysis by q RT-PCR and other techniques. | Emily Zeringer Mu Li Tim Barta Jeoffrey Schageman Ketil Winther Pedersen Axl Neurauter Susan Magdaleno Robert Setterquist Alexander V Vlassov | 2013 | World Journal of Methodology2013,3,1: | 5 |
| 16 | Assessment of the cardiovascular and gastrointestinal autonomic complications of diabetes显示文摘The global prevalence of diabetes mellitus is increasing; arguably as a consequence of changes in diet, lifestyle and the trend towards urbanization. Unsurprisingly, the incidence of both micro and macrovascular complications of diabetes mirrors this increasing prevalence. Amongst the complications with the highest symptom burden, yet frequently under-diagnosed and sub-optimally treated, is diabetic autonomic neuropathy, itself potentially resulting in cardiovascular autonomic neuropathy and gastrointestinal(GI) tract dysmotility. The aims of this review are fourfold. Firstly to provide an overview of the pathophysiological processes that cause diabetic autonomic neuropathy. Secondly, to discuss both the established and emerging cardiometric methods for evaluating autonomic nervous system function in vivo. Thirdly, to examine the tools for assessing pan-GI and segmental motility and finally, we will provide the reader with a summary of putative non-invasive biomarkers that provide a pathophysiological link between lowgrade neuro inflammation and diabetes, which may allow earlier diagnosis and intervention, which in future may improve patient outcomes. | Christina Brock Birgitte Brock Anne Grave Pedersen Asbjorn Mohr Drewes Niels Jessen Adam D Farmer | 2016 | World Journal of Diabetes2016,7,16: | 5 |
| 17 | Phase 2 trial of linifanib (ABT‐869) in patients with unresectable or metastatic hepatocellular carcinoma显示文摘 | Han Chong Toh Pei‐Jer Chen Brian I. Carr Jennifer J. Knox Sharlene Gill Peter Ansell Evelyn M. McKeegan Barry Dowell Michelle Pedersen Qin Qin Jiang Qian Frank A. Scappaticci Justin L. Ricker Dawn M. Carlson Wei Peng Yong | 2012 | Cancer2012,,2: | 4 |
| 18 | Decreasing Risk of Colorectal Cancer in Patients With Inflammatory Bowel Disease Over 30 Years显示文摘 | Tine Jess Jacob Simonsen Kristian Tore J?rgensen Bo Vestergaard Pedersen Nete Munk Nielsen Morten Frisch | 2012 | Gastroenterology2012,,2: | 4 |
| 19 | 堆积物古DNA揭示西藏廓雄遗址的食物构成显示文摘动物考古和植物考古是重建古代食谱的重要手段.对出土动植物遗存的种属鉴定是动植物考古研究的基础,但其鉴定效率严重依赖于动植物遗存的保存状态.沉积物古DNA(sedimentary ancient DNA)是一种新兴的技术手段,可以从数十万年以来的沉积物中提取出古代动植物和微生物的遗传信息,进而恢复当时生态环境中的物种组成.但目前将沉积物古DNA技术应用于旷野遗址的研究还鲜有报道.本文尝试将沉积物古DNA技术应用于西藏廓雄遗址(3160~2954cal a BP)的调查剖面,并与出土的动植物遗存进行对比.结果发现,在大麦(Hordeum vulgare)和绵羊(Ovis aries)等农作物与家养动物的鉴定上,两种方法可以互相印证,但遗址堆积物古DNA中还检测到大植物遗存中没有发现的粟(Setaria italica),以及多种与农作物伴生的微生物.本研究通过动植物常规鉴定方法与沉积物古DNA分析,揭示了廓雄遗址先民的部分食物组成,其中包括:粟类、麦类等谷物,绵羊、黄牛等家养动物,以及渔猎的野生动物等.本项研究表明,沉积物古DNA技术具有通过旷野遗址文化堆积物复原其中动植物种属信息的潜力,为其进一步应用于植物考古和动物考古研究奠定了基础. | 顾政权 高玉 王一如 杨继帅 冉景坤 杨晓燕 夏格旺堆 Mikkel Winther PEDERSEN 盛桂莲 王昱程 陈发虎 | 2023 | 中国科学:地球科学2023,53,4: | 4 |
| 20 | 日本鳗鲡仔鱼摄食机理及其营养策略显示文摘Leptocephalus larvae are the unique stage of larval development in all groups of fishes from the superorder Elopomorpha (Anguilliformes, Elopiformes and Notacanthiformes). To explain the leptocephalus strategy of larval development, various attempts have been made on the morphology, physiology and biochemistry of leptocephalus larvae. However, the feeding mechanism of leptocephalus larvae is still unknown. The Japanese eel (Anguilla japonica) larvae were found to have well developed scotopic vision, mechanoreception and chemoreception. Both early and leptocephalus larvae of Japanese eel actively ingested a kind of paste food by first touching the food with their snout and then tearing off a big mouthful of the paste with their sharp teeth. Chemoreception was shown to be critical to elicit the feeding response. Feeding by Sflex posture from a distance might be of some significance for the early larvae to catch movable food. It is proposed that that the natural food of Japanese eel larvae would be relatively large, rather soft, inactive and negatively phototactic. The developmental mode of sensory system and behavior of Japanese eel larvae seems to be similar to some deep sea fishes but contrast with most marine teleost fishes. | 梁旭方 谢骏 王秋荣 Benedikte H Pedersen | 2002 | 水产学报2002,26,6: | 4 |