Search from the Journals, Articles, and Headings
Advanced Search (Beta)
Loading...
Loading...
Loading...
Loading...
Loading...
Loading...

اردو صوت شناسی از محمد حسنین عسکری

اردو صوت شناسی از محمد حسنین عسکری

؏وہی جہاں تیرا ہے جس کو تو کرے پیدا

(بالِ جبریل)

زبان اور قلم دنیا میں انسان کی پہچان کے دو بنیادی ذرائع ہیں  جو قدرت نے عطا فرمائے ہیں۔دہن میں زبان آلہ صوت کے طور پر کام کرتی ہے۔ جو باہم گفت گو کے لیے استعمال ہوتی ہے۔زبان سے جو بامعنی آواز ادا ہوتی ہے وہ حروفِ تہجی سے جُڑے ہوئےالفاظ کو خاص لہجے اور مخارج کے تحت سامعین تک منتقل کر رہی ہوتی ہے۔زبان سے متعلق منظم علم لسانیات کہلاتا ہے۔لسانیات ایسے قواعد وضع کرتی ہے جس سے کسی بھی زبان کو کم وقت اور آسانی سے سیکھا جا سکتا ہے۔لسانیات کا سب سے اہم اور بنیادی موضوع صوتیات ہے۔

        صوتیات میں زبان کی مختلف آوازوں  کی شاخت،درجہ بندی اور حروف کی پہچان کو زیرِ بحث لایا جاتا ہے۔صوتیات میں اُن تمام انسانی آوازوں کا مطالعہ کیا جاتا ہے جو سمجھی جا سکتی ہیں۔ زندگی کے ہر شعبہ میں ترقی کے لیے وہاں ماہرِ لسانیات کا ہونا از حد ضروری ہے۔محترم و مکرم پروفیسر ڈاکٹر سیّد اشفاق حسین بخاری کی نگرانی میں لکھا گیا یہ محمد حسنین عسکری صاحب کا ایم فل مقالہ لسانیا ت و صوتیات کی تفہیم ، تدریس،تحقیق اور تاریخ کے میدان میں ایک سنگِ میل کی حیثیت  رکھتا ہے۔ موصوف سکالر نے  اس میں لسانیات کا جامع تعارف، لسانیات کی تاریخ،لسانیات کی شاخیں، صوتیات کی تعریف،صوتیات کی شاخیں،صوتیاتی اصطلاحات، مصوتوں اور مصمتوں  کا نظام اور سیر حاصل محاکمہ پیش فرمایا ہے۔لسانیات و صوتیات کی ابجد کے علم سے موجودہ ترقی کار تک واضع انداز میں تجزیہ و تبصرہ اس مقالہ میں شامل ہے۔اردو، انگریزی،عربی، فارسی کے جملہ شعبہ جات کے طلبہ و اساتذہ کرام کے لیے یہ ایک...

Development and Evaluation of an Audio System Trainer

Guided by the desire to contribute a little in the development of an innovative instructional technology for the teaching of electronics, this researcher constructed a prototype audio system trainer. Electronics teachers will find the instructional tool convenient and practical to use for visual instruction, laboratory activities and troubleshooting works in electronics. To support the functionality of the audio system trainer, the researcher developed a supplementary laboratory manual. The project whose production costs totaled fourteen thousand two hundred seventy two pesos and fifty centavos (Php 14,272.50) was finished in two weeks’ time. However, this amount is small if compared to the prices of commercially available instructional device developed for the same purpose. The completed project and the supplementary laboratory exercises were evaluated by selected technical faculty members of the College of Industrial Technology of the Bulacan State University, Bulacan Polytechnic College, University of Rizal System, and Lyceum of the Philippines University. Sampling technique as used in the study is both purposive and incidental. The prototype audio system trainer received an over-all mean rating of 4.62 which means that the project is highly acceptable on a set of criteria which includes – physical features, cost, function / operations, and durability. Furthermore, the supplementary laboratory exercises obtained a mean of 4.70 which could be interpreted that the respondents strongly agree on the validity of the manual.

Synthesis, Characterization and Biological Evaluation of Some Metal Complexes With Ligands Containing Cyclic Moieties

The research work describes the synthesis and characterization of compounds containing cyclic and heterocyclic moieties, Phthalimide and phenyl amide compounds aiming at search of new candidates to battle with microorganisms. Thanks to metals for being the charm of medicinal and pharmaceutical chemistry since many decades. To widen this search, 15 potential ligands were synthesized. Compounds containing phthalimide moieties (HL1-HL6) were synthesized by the reaction of various anilines with phthalic anhydride. The compounds were isolated in pure form and checked by TLC and had sharp melting points. The single crystal structures of the compounds were also reported and discussed. Then the compounds were treated with metal salts e.g, Zn (II), Fe (III), Cu (II), Sb (III) and as a result thirty four new metal complexes were synthesized. Further, phenylamide derivatives (HL7-HL11) were synthesized by reacting anilines with acetic anhydride. HL12-HL15 were synthesized by reacting substituted anilines with maleic anhydride and succinic anhydride. Forty new complexes of these amides with metals e,g Zn (II), Fe (III), Cu (II) and Sb (III) have been synthesized. All of the synthesized complexes were heat, air and moisture stable, but during the synthesis moisture and air were avoided to prevent the oxidation of the compounds using standard Schlenk line and glove box techniques. The stability profile augments the link between organometallics and drug design and discovery. The purity of all synthesized compounds was conventionally monitored with the help of TLC in different solvents. All synthesized compounds and their complexes with transition metals were characterized by elemental analysis, FTIR, GC-MS, 1H and 13 C-NMR spectroscopy. The structures were finally confirmed with the help of single crystal structures. All synthesized compounds and their metal complexes were evaluated for their carbonic anhydrase inhibition, intestinal alkaline phosphatase inhibition, antileshminial, anti oxidant, cytotoxic and antibacterial activities. The results of these bioassays are also reported and discussed in detail. The phenylamide ligands showed good carbonic anhydrase inhibition, as compared to phthalimides ligands. Further, the activity was enhanced by 40-60% in case of antimony complexes but the zinc complexes have shown slightly less carbonic anhydrase inhibition. Similarly, the complexes of antimony with amide ligands have shown excellent IAP inhibitory activities, while the zinc complexes have shown a maximum potential against IAP inhibition. Although most of the compounds are found to be good antileshminial inhibitors, the results have proved that the metal complexes of Zn, Cu and especially Sb have increased activities as compared to parent free ligands. Additionally, the said complexes also showed enhanced cytotoxic activities against BHK-21 and H-157 cell lines. The antibacterial activity against Gram –ve and Gram +ve bacteria were outstanding in case of metal complexes with the phthalimide ligand HL2. Results of antibacterial screening of compounds as percent inhibition against bacteria are reported. Overall, these newly synthesized metal complexes have provided important candidates for drug discovery. These candidates may be improved to be used as drugs, having enhanced pharmacological action.
Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.