271 research outputs found
Phytochemical and Biological Studies of Agave attenuata
No full textThe present study was conducted to examine various biological activities of a methanol extract of Agave attenuata leaves. GC-MS analysis of the n-hexane fraction from the extract revealed the presence of 31 compounds, with mono-2-ethylhexyl phthalate (11.37%), 1,2-benzenedicarboxylic acid (6.33%), n-docosane (6.30%) and eicosane (6.02%) as the major components. The leaves contained appreciable levels of total phenolic contents (10.541–39.35 GAE, mg/100 g) and total flavonoid contents (43.35–304.8 CE, mg/100 g). The extract and some of its fractions showed moderate antimicrobial effects. Leaves extract and fractions also exhibited a good antioxidant potential when measured by DPPH radical scavenging activity and inhibition of lipid peroxidation assays. The hemolytic effect of the plant was found to be in a range of 1.01%–2.64%. From the present study it is concluded that this plant could be used as a source of natural antioxidants and functional food nutraceutical application
Near-capacity iterative decoding of binary self-concatenated codes using soft decision demapping and 3-D EXIT charts
No full textIn this paper 3-D Extrinsic Information Transfer (EXIT) charts are used to design binary Self-Concatenated Convolutional Codes employing Iterative Decoding (SECCC-ID), exchanging extrinsic information with the soft-decision demapper to approach the channel capacity. Recursive Systematic Convolutional (RSC) codes are selected as constituent codes, an interleaver is used for randomising the extrinsic information exchange of the constituent codes, while a puncturer helps to increase the achievable bandwidth efficiency. The convergence behaviour of the decoder is analysed with the aid of bit-based 3-D EXIT charts, for accurately calculating the operating EbN0 threshold, especially when SP based soft demapper is employed. Finally, we propose an attractive system configuration, which is capable of operating within about 1 dB from the channel capacity
BOOK REVIEW: CHIP WAR: THE FIGHT FOR THE WORLD\u27S MOST CRITICAL TECHNOLOGY
No full textChris Miller is the author of the book titled "Chip War: The Fight for the World\u27s Most Critical Technology”. Currently, he is an Associate Professor of International History at the Fletcher School of Law and Diplomacy at Tufts University. His area of interest includes geopolitics, international affairs, technology, economics, and Russia.
Bibliography Entry
Riaz, Haadia. 2023. "Chip War: The Fight for the World\u27s Most Critical Technology." Margalla Papers 27 (2): 129-131
BOOK REVIEW: CHIP WAR: THE FIGHT FOR THE WORLD'S MOST CRITICAL TECHNOLOGY
No full textChris Miller is the author of the book titled "Chip War: The Fight for the World's Most Critical Technology”. Currently, he is an Associate Professor of International History at the Fletcher School of Law and Diplomacy at Tufts University. His area of interest includes geopolitics, international affairs, technology, economics, and Russia.
Bibliography Entry
Riaz, Haadia. 2023. "Chip War: The Fight for the World's Most Critical Technology." Margalla Papers 27 (2): 129-131
Antioxidant Potential and Oil Composition of Callistemon viminalis Leaves
No full textThe present study was designed to investigate the antioxidant potential and oil composition of Callistemon viminalis leaves. GC-MS analysis of the n-hexane extract revealed the presence of 40 compounds. Leaves contained appreciable levels of total phenolic contents (0.27–0.85 GAE mg/g) and total flavonoid contents (2.25–7.96 CE mg/g). DPPH radical scavenging IC50 and % inhibition of linoleic acid peroxidation were found to be in the ranges of 28.4–56.2 μg/ml and 40.1–70.2%, respectively. The haemolytic effect of the plant leaves was found in the range of 1.79–4.95%. The antioxidant activity of extracts was also studied using sunflower oil as an oxidative substrate and found that it stabilized the oil. The correlation between the results of different antioxidant assays and oxidation parameters of oil indicated that leaves' methanolic extract, exhibiting higher TPC and TFC and scavenging power, was also more potent for enhancing the oxidative stability of sunflower oil
Using Artificial Intelligence for Text Screening in a Systematic Review of Cardiotoxicity
No full textAcknowledgments: Under the guidance of the authors, Sweta Samantaray (PhD) provided writing support for this manuscript, Sonia Philipose (PhD) provided editorial assistance, and Subrata Kar (PhD) provided QC support (all are employees of Pfizer Inc.). Author contributions: Steven E. Canfield had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Canfield, Aziz, Omar, N’Dow, Schijvenaars, Ghith, Molony, Stenzl. Acquisition of data: Aziz, Schijvenaars, Molony. Analysis and interpretation of data: Schijvenaars, Ghith, Riaz Ahmed, Stenzl. Drafting of the manuscript: Omar, Schijvenaars, Ghith, Riaz Ahmed. Critical revision of the manuscript for important intellectual content: All authors. Statistical analysis: None. Obtaining funding: Ghith. Administrative, technical, or material support: Canfield, Aziz, Omar, N’Dow, Schijvenaars, Ghith, Riaz Ahmed, Molony, Stenzl. Supervision: N’Dow, Ghith, Riaz Ahmed, Stenzl. Other: None.Peer reviewe
Role of Citrullus colocynthis and Psidium guajava Mediated Green Synthesized Silver Nanoparticles in Disease Resistance against Aeromonas hydrophila Challenge in Labeo rohita
No full textGreen synthesis of metallic nanoparticles is an auspicious method of preparing nanoparticles using plant extracts that have lesser toxicity to animal cells and the host. In the present work, we analyzed the antibacterial activity of Citrullus colocynthis and Psidium guajava-mediated silver nanoparticles (Cc-AgNPs and Pg-AgNPs, respectively) against Aeromonas hydrophila (A. hydrophila) in an in vivo assay employing Labeo rohita (L. rohita). L. rohita were divided into six groups for both Cc-AgNPs and Pg-AgNPs treatments separately: Control, A. hydrophila infected, A. hydrophila + Ampicillin, A. hydrophila + Cc/Pg-AgNPs (25 mu g/L), A. hydrophila + Cc/Pg-AgNPs (50 mu g/L), and A. hydrophila + Cc/Pg-AgNPs (75 mu g/L). Changes in different bio-indicators such as hematological, histological, oxidative stress, and cytokine analysis were observed. Interestingly, the infected fish treated with both types of AgNPs (Cc-AgNPs and Pg-AgNPs) exhibited a higher survival rate than the untreated infected fish and demonstrated signs of recovery from the infection, providing a compelling indication of the positive impact of phytosynthesized AgNPs. Disruptions in hematological and histological parameters were found in the infected fish. Both Cc-AgNPs and Pg-AgNPs showed recovery on the hematological and histological parameters. Analysis of oxidative stress and cytokine markers also revealed provoking evidence of the positive impact of Cc-AgNPs and Pg-AgNPs treatment against disease progression in the infected fish. The major finding of the study was that the higher concentrations of the nanoparticles (50 mu g/L in the case of Cc-AgNPs and 75 mu g/L in the case of Pg-AgNPs) were more effective in fighting against disease. In conclusion, our work presents novel insights for the use of green-synthesized AgNPs as economic and innocuous antibacterial candidates in aquaculture
Manufacturing Software Prototype for applying fuzzy MCDM in Well completion optimization
No full textWell completion is the important system to put the well into the production phase. This well completion engineering system is complex engineering which requires reservoir drilling, cementing of the well, installation of the completion systems according to the well specifications, and then finally initiate the production phase of the well. Due to the major role in the production, stability and life of the well, the oilfields economic benefits are much influenced by the well completion methodology selection. For well completion selection we have various models and specific methodologies, but it is proven that all the selection models are partial due to enhanced focus on quantitative and numerical indexes for example initial production etc. The expert’s opinion has a major role for well completion selection as the selection process is very sophisticated and decision makers from various technological background provide useful information and knowledge which finally can help us to design an optimum well completion design.
In this thesis, I will develop a fuzzy TOPSIS decision making software prototype for well completion models selection. I will use linguistic variables instead of crisp values for prototype development due to the data inadequacy to solve the real world problems, and also human beings are not good in judgments and preferences where they have to estimate the exact numerical values for their decisions. So, the use of linguistic variables seems to be more realistic approach where I can rate and weight each criterion for completion models in terms of linguistic variables for assessment.
A case study is discussed in the Chapter 5 to select the well completion model for the Iris production field. Iris field is located on the North Continental Shelf and to the west of Morvin field. Iris reservoir properties indicates that it is HPHT well and it belongs to the Garn formation of Middle Jurassic age. A decision-making system, Fuzzy TOPSIS, developed in this thesis will be applied on the Iris production field to select the lower completion, middle completion, and upper completion
ڈاكٹر ریاض مجید كی پنجابی نعت گوئی
No full textRiaz Majeed is a renowned contemporary poet, author, researcher, critic and an active literary personality. He has mastery of ghazel, poem, Naat, Manqabat and other literary genres of both Urdu and Punjabi languages. He regularly composes glorifying verses showing esteemed reverence for the Holy Prophet (PBUH). A number of his books on Naat have been published so far. The article deals with the Punjabi Naat writing of Dr. Riaz Majeed
ریاض احمد کے تنقیدی رویوں کا نفسیاتی دائرہ کار
No full textThe tendency of psychological criticism in Urdu criticism has been among the critics of “HALQA ARBAB ZAOQ”. Riaz Ahmad is the second biggest psychological critic after Meera ji. Psychological Criticism is a psychological analysis of the effects of creation on the author, the characters, and the reader. Riaz Ahmad presented theoretical and practical critiques in the light of the psychological theories of Freud, Young and Adler. He made Urdu poetry part of a more practical critique. He described the difference between classical Urdu poetry and modern Urdu poetry in terms of psychological principles. Psychological justification for the use of nickname, styles and themes. This article analysis the psychological scope of Riaz Ahmad’s critique. He tested modern poets on the criterion of psychological criticism, including NM Rashid, Meera ji, Faiz, Sahir, Majeed Amjad, Qayyum Nazar, Yusuf Nazar and others. Riaz Ahmad has given precedence to modern poets over progressive poets. According to Riaz Ahmad, progressive poets are sexist. His criticism is biased. This article covers all aspects of his psychological critique. His critique has been clarified with arguments. This article is an attempt to understand Riaz Ahmad’s critique
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