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Poetry of Amjad Islam Amjad
No full textAmjad Islam Amjad is a renowned poet. He holds proficiency in bothPoem and Ghazal. He has portrayed every topic of the universe in hispoetry. We find delicate musical sense in his poetry. The epic of emotions, attachment with classic and innovation has made him a unique poet
Poetry of Amjad Islam Amjad
No full textAmjad Islam Amjad is a renowned poet. He holds proficiency in bothPoem and Ghazal. He has portrayed every topic of the universe in hispoetry. We find delicate musical sense in his poetry. The epic of emotions, attachment with classic and innovation has made him a unique poet
Poetry of Amjad Islam Amjad
No full textAmjad Islam Amjad is a renowned poet. He holds proficiency in bothPoem and Ghazal. He has portrayed every topic of the universe in hispoetry. We find delicate musical sense in his poetry. The epic of emotions, attachment with classic and innovation has made him a unique poet
咪唑基电致发光材料的设计、合成、表征及其在OLED方面的应用
No full text有机电致发光(EL)材料现已应用于光电器件多个方面,其在有机发光二极管(OLED)领域已取得了重大进展。因此,开发新型的有机电致发光材料已经成为材料科学和工程领域最广泛的研究课题之一。自从Tang and VanSlyke采用有机材料作为发射体构建有机电致发光器件以来,高效稳定的电致发光材料的开发得到蓬勃发展。在结构类型不同的器件中,非掺杂器件以其成本低,制造工艺简单而具有特殊意义。为了增强器件的电致发光性能,在探索不同类型的非掺杂蓝色荧光发射器件方面,前人已经做出了许多努力。咪唑类化合物作为高性能材料应用于光电方面具有光明的前景。由于咪唑基化合物的双极性特征,所以可用作空穴传输,电子传输以及发光材料。我们设计和合成了高性能深蓝光咪唑和菲咯啉衍生物,用于高效率的非掺杂OLED。将不同的组分如三苯胺,咔唑和芘通过苯环与咪唑或菲咯啉连接到咪唑和菲咯啉,来增加给电子的能力、提高三重态能级和光致发光量子产率。基于TPAPyPI的器件性能优异,启亮电压低(3.2V),效率高(4.24cd/A,3.67lm/W,4.66%),较高电流密度下的效率滚降相对较小,以及稳定的深蓝光发射,CIEy为0.13。此外,我们还研究了一些应用于OLED器件的新型多功能材料。所有合成的化合物都显示出高效的蓝光发射潜力。BPTPETPAI和2TPETPAI两种材料既没有显示出典型的因聚集引起的猝灭(ACQ)行为,也没有出现典型的聚集诱导发射(AIE)现象,然而,TPETPAI和TPETPAPI却显示出典型的ACQ效应。BPTPETPAI和2TPETPAI发射蓝绿色光,而TPETPAI和TPETPAPI发出深蓝光。基于以上材料的蓝光的OLED器件,EQE高达3.25%(6.80 cd/A,4.35 lm/W),效率滚降低。类似地,与蓝色荧光材料相关的另一个主要问题是:固态时,荧光强度随着聚集的增加而降低。Tang课题组发现了一种被称为聚集诱发发射(AIE)的新现象解决了这个问题。在这种情况下,光的强度随着聚集增强而增加,而不是降低发射强度。因此,我们探索了结构简单的AIE发射体,并将其应用于OLED器件。合成的所有化合物都显示出蓝光发射,并具有聚集诱导发光(AIE)特性。迄今为止,基于这些化合物的非掺杂器件相比于已报道的非掺杂器件,性能优异。基于以上材料的OLED器件显示蓝色发光,CE高达6.97 cd/A,效率滚降低。以上数据表明,这些基于咪唑中心核的高效电致发光材料应用在OLED中,作为发射层具有很大的潜力
Effect of Yeast-Fermented Citrus Pulp as a Protein Source on Nutrient Intake, Digestibility, Nitrogen Balance and In Situ Digestion Kinetics in <em>Nili Ravi</em> Buffalo Bulls
Get PDFA study was carried out to evaluate the effect of single cell protein (SCP) supplement as a protein source on nutrient intake, digestibility, nitrogen balance and in situ digestion kinetics in four Nili Ravi buffalo bulls. Four iso-caloric and iso-nitrogenous concentrates containing 3, 6, 9 and 12% of Saccharomyces cerevisiae-fermented citrus pulp were formulated. All animals were fed a ration with a concentrate/forage ratio of 50:50. Diets were provided ad libitum twice a day as a total mixed ration in a 4 × 4 Latin Square Design. Each experimental period lasted 3 weeks while the overall study 12 weeks. The first 2 weeks of each experimental period were used as adaptation period while the third week as collection period. Chemical composition of fermented citrus pulp appeared as an excellent source of protein. No significant difference was observed on dry matter intake, digestibility of nutrients and SCP among all the treatments. Moreover, no significant effect was observed on ruminal pH and ammonia nitrogen at different times. Rate of disappearance and lag time of in situ dry matter digestion kinetics remained nonsignificant regardless of SCP percentage. Based on results of similar nutrients intake, nutrient digestibility, and ruminal parameters it is concluded that SCP could be used in the concentrate diet of ruminant up to 12%. Furthermore, the SCP has the potential of an alternative protein source in animal diet formulation
امجد اسلام امجد کے شعری مجموعے” یہیں کہیں“کا موضوعاتی مطالعہ: AMJAD ISLAM AMJAD’S POETIC COLLECTION ‘YAHIN KAHIN’: A THEMATIC STUDY
No full textAmjad Islam Amjad was a popular and versatile poet. He stepped into the genre of Urdu Poetry in 1974 through his poetic collection "Barzakh". He presented a number of poetic collections to Urdu Literature. He was basically a poet of free verse in Urdu but was equally successful in Urdu ghazals. His poetic collection "Yahin Kahin" was published in 2006. His poetry carries a wide range of topics. Love, separation, fate, nature, sympathies for humanity and evenings that breathe in the past when accompanies his unique poetic style, enhances the beauty of his poetry. This article is written to commemorate him. His collection "Yahin Kahin" has been analysed in the light of his unique poetic style
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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