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Studies on Characterization of Alarm Pheromone of Termites Odontotermes Obesus Rambur

Thesis Info

Author

Syed Badar

Department

Deptt. of Biological Sciences, QAU.

Program

Mphil

Institute

Quaid-i-Azam University

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

1984

Thesis Completion Status

Completed

Page

63

Subject

Biological Sciences

Language

English

Other

Call No: DISS/M.Phil BIO/66

Added

2021-02-17 19:49:13

Modified

2023-02-19 12:33:56

ARI ID

1676715681805

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حفیظ صدیقی

حفیظ صدیقی
حفیظ صدیقی(۱۹۳۴ئ۔پ) پسرور کے گائوں برہان پور میں پیدا ہوئے۔ ۱۹۶۳ء میں گورنمنٹ جناح اسلامیہ کالج سیالکوٹ میں آپ کی بطور لیکچرار اردو تقرری ہوئی۔ ۱۹۷۳ء میں ایم۔اے او کالج لاہور میں تبادلہ ہوا۔ اس کالج سے ۱۹۹۳ء میں حفیظ سرکاری ملازمت سے ریٹائر ہوئے (۸۰۸) حفیظ صدیقی کے تمام شعری مجموعے صدیقی پبلی کیشنز لاہور سے طبع ہوئے۔
پہلا شعری مجموعہ ’’لمحوں کی آگ‘‘ ۱۹۷۶ء میں شائع ہوا۔ دوسرا شعری مجموعہ’’پہلی رات کا چاند‘‘ ۱۹۷۸ء میں شائع ہوا۔ ’’درد کا رشتہ‘‘ ان کا تیسرا شعری مجموعہ ہے جو ۱۹۷۸ء میں شائع ہوا۔ چوتھا شعری مجموعہ ’’لا زوال‘‘ کے نام سے ۱۹۹۲ء میں شائع ہوا۔’’لا مثال‘‘ ان کا پانچواں شعری مجموعہ ہے جو ۱۹۹۵ء میں طبع ہوا۔ چھٹا شعری مجموعہ ’’آنگن کا جہنم‘‘ ۱۹۷۷ء میں شائع ہوا۔ ان شعری مجموعوں کے علاوہ حفیظ کا شعری کلام پاکستان کے مختلف جرائد و رسائل میں چھپتا رہا۔ جسے مرتب کرنے کی ضرورت ہے ۔’’بارش کے پہلے قطرے‘‘ ،’’تشنہ تشنہ‘‘ ،’’خواب دیکھتے گزری‘‘ ،’’سکھ کا سراب‘‘،’’میرے سر پہ ہاتھ رکھنا‘‘،’’وہ میرے اندر ہی بس رہا ہے‘‘،اور ’’ہر موج سمندر‘‘ ان کے غیر مطبوعہ شعری مجموعے ہیں۔جوان کے لواحقین کے پاس مسودات کی صورت میں موجود ہیں ۔حفیظ صدیقی نے جب شعر کہنا شروع کیا تو وہ قیام پاکستان کے بعد کا دور تھا۔ اس وقت ترقی پسند تحریک ایک نئے دور میں داخل ہو گئی تھی۔ حفیظ کا اس تحریک سے براہ راست کوئی تعلق نہیں تھا۔ تاہم ان کی ابتدائی غزلوں میں ترقی پسند تحریک کے اثرات نظر آتے ہیں۔ ان کے ابتدائی کلام میں استحصال زدہ طبقے کے درد کی آواز سنائی دیتی ہے۔ حفیظ کی غزل میں نہ صرف روایتی انداز ہے بلکہ ان کے ہاں جدت بھی ملتی ہے۔ دھیمے لہجے میں وطن اور اپنی مٹی سے محبت کے ساتھ ساتھ خارج و باطن...

سیرتِ صحابہ کرام کی روایات کے اصول و ضوابط : معاصر آراء کا تجزیاتی مطالعہ

Researchers, Scholars and historians have rendered invaluable services on important topics such as the biography of the Prophet ( P.B.U.H) and the Biography of Sahaabah. But unfortunately some writers have included in their writings some traditions and baseless historical references about the holy congregation of the Companions which are not worthy of the holy congregation and do not meet the rules and regulations of the traditions of these biographies and histories ۔ Leading historians of the present day have done unparalleled work on the Seerah of the Companions in the case of the writings and compilations of the Seerah and history. Has done research work on relations with But in the beginning (in the case) as well as in the context, the principles of Seerah  and history have been discussed in detail and we have tried to bring out all the principles that are standard, accepted, in the Seerah and the character of the Companions and the disputes of the Companions. I am going to pave the way for balance and moderationIn The following Lines, a special study or the principles of biography and history described by contemporary historians such as Maulana Shibli Nomani ( 1913) Maulana Saeed Ahmed Akbarabadi ( 1985) and Maulana Nafe (2014) is presented. In this regard, efforts will be made to clarify how the path of moderation can be taken in this regard, how the honor of Ahel Bayt and Sahabah can be  maintained and how such traditions  can be avoided as a result. There was no mention of Ahle –e- Bayt or Zat –e- Sahaba or there was no element of division.

Synthesis and Charaterization of Polyurethane Composite Materials Derived from Hydroxy Terminated Polyepichlorohydrins

Hydroxy terminated polyepichlorohydrins (PECH) of different molecular weights were synthesized using a novel catalyst and co-catalyst combinations. Different polymerization conditions like temperature, time and monomer addition rates exhibited pronounced effect on the molecular weight, polydispersity and functionality of the products. After optimization of the conditions, polyepichlorohydrins of three different molecular weights i.e., 1045, 2497 and 3521 daltons were selected for the preparation of their polyurethane elastomers (PUE). The DSC studies of the polyol displayed linear increase in glass transition temperature (Tg) with the increase in its molecular weight (-35.6 to -28.3 oC). In second part of the present study two series of polyurethane elastomers were prepared by prepolymer method from polyepichlorohydrins (polyols) of three different molecular weights, aromatic (TDI) and cycloaliphatic (IPDI) diisocyanates and three chain extenders (1,4-butadiol, 1,6-hexanediol and cyclohexanedimethanol). The structural elucidation of PECH and its elastomers was carried out by FT-IR and NMR spectroscopic techniques. The change in molecular weight (polyol), type of diisocyanate, nature of chain extender and amount of chain extenders engendered significant effect on the surface morphology and thermo-mechanical properties of the resulting PUEs. Aromatic diisocyanate based elastomer (P25TDIDM10) exhibited optimum UTS (8.11 MPa) and elongation at break (511.7%) whereas cycloaliphatic diisocyanate elastomer (P10IPDIDM10) showed 8.58 MPa UTS and elongation at break (511.7%). All the polyurethane elastomers were stable up to 200 °C and were degraded without melting to constant mass above 450 °C. Tg of TDI based PUE was increased to -16 oC while in IPDI series it was further shifted to 7.98 oC. In the third part of this research work, selective polyurethane elastomer P10IPDIDM10 was used, due to its superior properties, as a matrix for the synthesis of polymer based composites. Graphite, aluminium flakes and aluminium powder were used in different proportions (5-15%) as fillers in the polymer matrix composites. Incorporation of fillers enhanced the UTS with corresponding decrease in elongation at break, whereas in case of graphite, electrical properties of the composite were also improved. The present study revealed that the synthesized PUEs and composites were found promising candidates for various advanced applications.