|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 水稻叶片上表面气孔特征的变异显示文摘用硅胶压印技术观测水稻叶片正面的气孔密度、大小和开度,所得数据用GIMMS计算机软件绘制成气孔特征分布等值图。结果表明:不同取样时间气孔开度变异甚大;在叶片不同部位,以叶片中部的气孔开度较大,叶片基部的气孔开度较小;叶片顶部和边缘的气孔开度因测定时间而异。气孔大小和密度的分布也有很大的不均一性:叶片边缘气孔分布最多,叶片顶部气孔分布最少;保卫细胞则以叶片顶部的最大,叶片边缘的最小。讨论了试验结果对气孔生理研究的意义。 | 杨建昌 王志琴 朱庆森 Weyers J D B Peng Zhiyong | 1996 | 江苏农学院学报1996,17,3: | 5 |
| 2 | Improved performance of UVC-LEDs by combination of high-temperature annealing and epitaxially laterally overgrown AlN/sapphire显示文摘We report on the performance of AlGaN-based deep ultraviolet light-emitting diodes(UV-LEDs)emitting at 265 nm grown on stripe-patterned high-temperature annealed(HTA)epitaxially laterally overgrown(ELO)aluminium nitride(AIN)/sapphire templates.For this purpose,the structural and electro-optical properties of ultraviolet-c light-emitting diodes(UVC-LEDs)on as-grown and on HTA planar AlN/sapphire as well as ELO AlN/sapphire with and without HTA are investigated and compared.Cathodoluminescence measurements reveal dark spot densities of 3.5×10^9 cm^-2,1.1×10^9 cm^-2,1.4×10^9 cm^-2,and 0.9×10^9 cm^-2 in multiple quantum well samples on as-grown planar AIN/sapphire,HTA planar AlN/sapphire,ELO AlN/sapphire,and HTA ELO AlN/sapphire,respectively,and are consistent with the threading dislocation densities determined by transmission electron microscopy(TEM)and high-resolution X-ray diffraction rocking curve.The UVC-LED performance improves with the reduction of the threading dislocation densities(TDDs).The output powers(measured on-wafer in cw operation at 20 mA)of the UV-LEDs emitting at 265 nm were 0.03 mW(planar AlN/sapphire),0.8 mW(planar HTA AlN/sapphire),0.9 mW(ELO AlN/sapphire),and 1.1 mW(HTA ELO AlN/sapphire),respectively.Furthermore,Monte Carlo ray-tracing simulations showed a 15%increase in light-extraction efficiency due to the voids formed in the ELO process.These results demonstrate that HTA ELO AlN/sapphire templates provide a viable approach to increase the efficiency of UV-LEDs,improving both the internal quantum efficiency and the light-extraction efficiency. | NORMAN SUSILO EVIATHAR ZIFFER SYLVIA HAGEDORN LEONARDO CANCELLARA CARSTEN NETZEL NEYSHA LOBO PLOCH SHAOJUN WU JENS RASS SEBASTIAN WALDE LUCA SULMONI MARTIN GUTTMANN TIM WERNICKE MARTIN ALBRECHT MARKUS WEYERS MICHAEL KNEISSL | 2020 | Photonics Research2020,8,4: | 4 |
| 3 | Current-induced degradation and lifetime prediction of 310 nm ultraviolet light-emitting diodes显示文摘The impact of operation current on the degradation behavior of 310 nm UV LEDs is investigated over 1000 h of stress. It ranges from 50 to 300 mA and corresponds to current densities from 34 to 201 A/cm^2.To separate the impact of current from that of temperature, the junction temperature is kept constant by adjusting the heat sink temperature. Higher current was found to strongly accelerate the optical power reduction during operation. A mathematical model for lifetime prediction is introduced.It indicates that lifetime is inversely proportional to the cube of the current density, suggesting the involvement of Auger recombinati on. | Jan Ruschel Johannes Glaab Batoul Beidoun Neysha Lobo Ploch Jens Rass Tim Kolbe Arne Knauer Markus Weyers Sven Einfeldt Michael Kneissl | 2019 | Photonics Research2019,7,7: | 3 |
| 4 | Agricultural opportunities to mitigate greenhouse gas emissions显示文摘 | Jane M.-F. Johnson Alan J. Franzluebbers Sharon Lachnicht Weyers Donald C. Reicosky | 2007 | Environmental Pollution2007,,1: | 2 |
| 5 | Fasting and postprandial plasma concentrations of acylation-stimulation protein (ASP) in lean and obese Pima Indians compared to Caucasians显示文摘 | Weyer C Pratley RE | 1999 | Obes Res1999,7,: | 2 |
| 6 | 前臂桡侧皮瓣是阴茎再造术的标准术式吗?显示文摘背景与目的阴茎再造的目标明确,已有多种皮瓣用于阴茎再造,但没有一种皮瓣是最为理想的再造方法。尽管如此,前臂桡侧皮瓣目前是应用最多、并被广泛认可的标准术式。方法本文回顾分析了287例前臂桡侧皮瓣阴茎再造的结果,是迄今为止患者数最多的报道。手术均由同一医疗小组完成。许多研究数据都已发表在之前的文章中,本综述的主要目的是评价这个“标准术式”可以在多大程度上达到手术预期的目的。结果评价指标包括所需手术次数、并发症、外形美观度、触觉、性敏感度、排尿难易度、供皮区并发症、阴囊外形以及性生活质量等。结论由于缺乏前瞻性随机对照研究,尚不能证明前臂桡侧皮瓣是阴茎再造的最佳方法。但是,这项大样本研究证明,前臂桡侧皮瓣阴茎再造术是一种可靠的再造方法,可以形成外观接近正常的阴茎和阴囊,术后患者可直立排尿,多数患者性生活满意。该手术多数分Ⅱ期完成。该技术的主要缺点包括早期尿道瘘发生率较高,前臂供皮区遗留瘢痕,以及可能并发慢性泌尿系统并发症。尽管缺乏足够的证据,但是笔者认为,如果想要获得更好的手术效果,必须加强整形再造外科医师与泌尿外科医师之间的多学科间紧密合作。 | Stan Monstrey Piet Hoebeke Gennaro Selvaggi Peter Ceulemans Koen Van Landuyt Phillip Blondeel Moustapha Hamdi Nathalie Roche Steven Weyers Griet De Cuypere 姚尧 陶凯 魏峰 高景恒 张晨 | 2012 | 中国美容整形外科杂志2012,23,5: | 2 |
| 7 | Modeling the Dynamic Corrosion Process in Chloride Contaminated Concrete Structures显示文摘 | T Liu R.W Weyers | 1998 | Cement and Concrete Research1998,,3: | 2 |
| 8 | Hypoadiponectinemia inobesity and type 2 diabetes: close association with insulin resistanceand hyperinsulinemia 显示文摘 | Weyer C Funahashi T Tanaka S | 2001 | J Clin Endocrinol Metab2001,86,: | 1 |
| 9 | Modeling the Dynamic Corrosion Process in Chloride Contaminated Concrete Structures显示文摘 | Liu T Weyers R W | 1998 | Cement and Concrete Rsearch1998,,3: | 1 |
| 10 | Hypoadiponectinemia in obesity and type 2 diabetes:Close association with insulin resistance and hyperinsulinemia显示文摘 | Weyer C Funahashi T Tanaka S | 2001 | J Clin Endocrinol Metab2001,86,: | 1 |
| 11 | The role of impaired early insulin secretion in the pathogenesis of type 2 diabetes mellitus显示文摘 | Prateley RE Weyer C | 2001 | Diabetologia2001,44,: | 1 |
| 12 | Modeling the time-to-corrosion cracking in chloride contaminated reinforced concrete structures 显示文摘 | Liu Y P Weyers R E | 1998 | ACI Material Journal1998,95,6: | 1 |
| 13 | Modeling the time-to-corrosion cracking in chloride contaminated reinforced concrete structures显示文摘 | Liu Y Weyers R E | 1998 | ACI Materials Journal1998,95,6: | 1 |
| 14 | The effectiveness ofhysteroscopy in improving pregnancy rates in subfertile women without other gynaecological symptoms: a systematic review 显示文摘 | Bosteels J Weyers S Puttemans P | 2010 | Hum Reprod Update2010,16,1: | 1 |
| 15 | Pramlintide reduces postprandial glucose excursions when added to regular insulin or insulin lispro in subjects with type 1 diabetes:a dose-timing study显示文摘 | Weyer C Gottlieb A Kim DD | 2003 | Diabates Care2003,26,11: | 1 |
| 16 | Hypoadiponectinemiain obesity and type 2 diabetes:close association with insulin resistance and hyperinsulinemia 显示文摘 | Weyer C Funahashi T Tanaka S | 2001 | J Clin Endocrinol Metab2001,86,: | 1 |
| 17 | Hypoadiponectinemia in obesity and type 2 diabetes: close association with insulin resistance and hyperinsulinemia显示文摘 | Weyer C Funahashi T Tanaka S Hotta K Matsuzawa Y Pratley R E | 2001 | J Clin Endocrinol Metab2001,86,: | 1 |
| 18 | High white blood cell count is associated with a worsening of insulin sensitivity and predicts the development of type 2 diabetes显示文摘 | VOZAROVA B WEYER C LINDSAY R S | 2002 | Diabetes2002,51,: | 1 |
| 19 | Hypoadiponectin mia in obesity and type 2 diabetes: close association with insulin resistance and hyperinsulinemia显示文摘 | WEYER C FUNUHASHI T TANAKA S | 2001 | J Clin Endocrinol Metab2001,86,5: | 1 |
| 20 | The effectiveness of hysteroscopy in improving pregnancy rates in subfertile women without other gynaecological symptoms: a systematic review 显示文摘 | Bosteels J Weyers S PuRemans P | 2010 | Hum Reprod Update2010,16,1: | 1 |