1,144 research outputs found
Design, Analysis and Applications of Wearable Antennas: A Review
No full textWearable antennas are the vital components for Body Centric Communication (BCC). These antennas have recently gained the attention of researchers and have received a great deal of popularity due to their attractive characteristics and opportunities. They are fundamental in the Wireless Body Area Networks (WBANs) for health care, military, sports, and identification purposes. Compared to traditional antennas, these antennas work in close proximity to the human body, so their performance in terms of return loss, gain, directivity, bandwidth, radiation pattern, efficiency, and Specific Absorption Rate (SAR) is influenced by the coupling and absorption of the human body tissues. Additionally, in the design of these antennas, size, power consumption, and speed can also play a paramount role. In most cases, these antennas are integrated into the clothes, or in some cases, they may be fixed over the skin of the users. When these characteristics are considered, the design of wearable antennas becomes challenging, particularly when textile materials are examined, high conductivity materials are used during the manufacturing process, and various deformation scenarios have an impact on the design’s performance. To enhance the overall performance of the wearable antennas and to reduce the backward radiation towards the human body, metamaterial surfaces are introduced that provide a high degree of isolation from the human body and significantly reduce the SAR. This paper discusses the state-of-the-art wearable/textile/flexible antennas integrated with metamaterial structures composed of wearable/flexible substrate materials, with a focus on single and dual band antenna designs. The paper also reviews the critical design issues, various fabrication techniques, and other factors that need to be considered in the design of wearable/textile/flexible antennas. All the designs presented in this work are of the recent developments in wearable technology
Surviving Modernity: Ashraf 'Ali Thanvi (1863-1943) and the Making of Muslim Orthodoxy in Colonial India
No full textThis dissertation examines the shape, substance, and staging of Muslim orthodoxy in British India, concentrating on how orthodox theologians survived colonial modernity by deploying sociological, discursive, psychic, and hermeneutical strategies. This dissertation is organized around Ashraf `Ali Thanvi (1863-1943), a leading Muslim theologian, mystic, and jurist of colonial India. Thanvi authored hundreds of original treatises, compiled texts, and works of commentary on doctrine and ritual, mystical experience, communal identity, and political theology. His collected letters, recorded conversations, and sermons were published within his lifetime and continue to instruct many contemporary South Asian Muslims. I closely read Thanvi's texts and situate them within two frameworks: the history of Indo-Muslim thought and the socio-political history of colonial India. Thanvi's hundreds of published treatises and sermons, continued citation within South Asian Islam, and widespread sufi fellowship make him one of the most compelling case studies for analyzing some of the key thematic concerns of Muslim orthodoxy, such as religious knowledge, self-discipline, sublimation of desire, regulation of gender, and communalist politics. My analyses demonstrate how orthodox scholars proliferated their theological, legal, and mystical teachings in order to make tradition relevant and authoritative in the public and private lives of many South Asian Muslims. Orthodox Islam not only survived colonial modernity, but also thrived in its ideological and social contexts.</p
Women and Male Urdu poets: A Few Examples
No full text.Attraverso alcuni esempi tratti dai più importanti poeti urdu moderni, l’articolo intende mettere in luce gli atteggiamenti dei poeti maschi nei confronti delle donne e dei loro diritti, e della questione femminile. I poeti presi in considerazione sono Nazir Akbarabadi, Altaf Husain Ali, Muhammad Iqbal, Josh Malihabadi e Kaifi Azmi. Through a few examples taken from major modern Urdu poets, this paper is meant to highlight men poets’ attitudes towards women and their rights and towards the women question. The poets taken into account are Nazir Akbarabadi, Altaf Husain Ali, Muhammad Iqbal, Josh Malihabadi, and Kaifi Azmi
The Folio: F. C. C. Magazine
No full textImtiaz Ahmad Khan-Editorial. pp. 1; Speech-Principal's Address at the Opening Assembly September, 1948. pp. 2-3; Poetic Flights. pp. 3; Imtiaz Ahmad Khan-Article-On Solving a Mathematics Problem. pp. 3-4; Mohd. Mubinur Rahman-Essay-Our Twentieth Century. pp. 5; Ishfaq Ahmad-Article-Atomic Energy. pp. 6-7; Butt, M. Naseer-Essay-Pessimistic Reverie! pp. 7-9; Falk, Clarence-Forests. pp. 9-10; Chandi, P.T.-Sports-Tennis. pp. 11; Sports-Basket Ball. pp. 11; Naseem Shujaat Mirza-Sports-Cricket. pp. 12-13; Acton, P. John-Essay-Religion in the 20th Century. pp. 13-14; Riaz Piracha-Old Boys' Reunion Dinner 1949. pp. 14-15; The Folio [Urdu] 34 p.Quaid e Azam, Muhammad Ali Jinnah. after page 1
Facile preparation of Fe3 O4 nanoparticles/reduced graphene oxide composite as an efficient anode material for lithium-ion batteries
No full textIron oxides are considered promising electrode materials owing to their capability of lithium storage, but their poor conductivity and large volume expansion lead to unsatisfactory cycling stability. In this paper, an inexpensive, highly effective, and facile approach to the synthesis of Fe3 O4 nanoparticles/reduced graphene oxide composite (Fe3 O4 /RGO) is designed. The synthesized Fe3 O4 /RGO composite exhibits high reversible capability and excellent cyclic capacity as an anode material in lithium-ion batteries (LIBs). A reversible capability of 701.8 mAh/g after 50 cycles at a current density of 200 mA·g−1 can be maintained. The synergetic effect of unique structure and high conductivity RGO promises a well soakage of electrolyte, high structure stability, leading to an excellent electrochemical performance. It is believed that the study will provide a feasible strat-egy to produce transition metal oxide/carbon composite electrodes with excellent electrochemical performance for LIBs
Borage leaf extract improves the vase life of cut gladiolus flowers by delaying the senescence process and reducing water stress
No full textQuality of cut flowers is always associated to vase life at the consumer. In previous studies, novel preservative postharvest treatments have been tested to prolong vase life and commercial quality. The aim of this work was to study the potential use of borage (Borago officinalis L.) leaf extract as natural vase life enhancer for cut gladiolus flowers. Borage leaf extracts (BE) applied as 1 %, 2 %, 3 % and 4 % (v/v) in vase solutions extended the vase life from 6.2 to 13 d. We recorded a concentration of BE at 3 % significantly improved the number of open flowers, the floret diameter, the relative fresh weight, chlorophyll and carotenoid content. BE showed antioxidant properties, as they decreased oxidative stress and reduced the lipid peroxidation as demonstrated by the malondialdehyde (MDA), hydrogen peroxide (H2O2) concentrations and membrane stability index (MSI). Postharvest treatment with BE boosted proline content in cut gladiolus, indicating a reaction that was associated with the alleviation of water stress. BE application improved total soluble proteins, sugars and phenols in the florets resulting in prolong of the vase life. Bacterial count was reduced in BE treated vase solutions depicting less proliferation of bacteria at stem ends and hence reduced stem blockage. The best postharvest performance was obtained by the BE at 3 %. The promising results of current experiments, may be suggested as potential postharvest treatment to prolong the vase life of sword lily
Wandering Spleen: A Rare Condition with Splenic Torsion and Infarction in an Elderly Patient
No full textEctopic spleen or wandering spleen is an uncommon presentation in which the spleen's anatomical location is different from its fixed position in the left upper quadrant of the abdomen, due to the absence of the typical peritoneal attachments; the spleen is more mobile inside the abdomen. Congenital or acquired conditions are the cause of this anomaly, which could ultimately result in torsion and splenic infarction. Less than 0.2% of wandering spleen cases are reported annually, making it a rare clinical manifestation. Splenic vascular pedicle torsion can result in complications that can cause symptoms of an acute abdomen as a result of ischemic necrosis of the spleen. Computed tomography and ultrasonography with Doppler or CEUS are essential for accurate diagnosis due to the vague clinical signs and potential complications. This case involves a 70-year-old elderly woman who complained of extreme abdominal pain and vomiting for three days. On physical examination, a tense right lower quadrant lump was palpated, when she visited the emergency room. An urgent CT scan was done for the acute abdomen which revealed torsion of the splenic pedicle in a wandering spleen
[Book Review] The Bruce B. Lawrence reader: Islam beyond borders. Edited and with an introduction by Ali Altaf Mian
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