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Performance Studies of Cms Resistive Plate Chambers at S=13 Tev and Measurement of Inclusive Tt Cross Section at S= 5. 02 Tev

Thesis Info

Access Option

External Link

Author

Shah, Mehar Ali

Program

PhD

Institute

Quaid-I-Azam University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Physics

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10534/1/Mehar%20Ali%20Shah_Phy_2019_QAU.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726858770

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The CMS experiment at the CERN Large Hadron Collider (LHC) has a redundant muon system composed of three different detector technologies: Cathode Strip Chambers (CSC, in the endcap regions), Drift Tubes (DT, in the barrel region), and Resistive Plate Chambers (RPC, both in the barrel and endcap). The RPC are designed mainly as a trigger detector but they contribute to the muon reconstruction as well. Thus the monitoring and analysis of the system performance are necessary and essential for the final data quality. The main detector characteristics and the hit efficiency and cluster size are presented in this thesis. The stability of the system in the conditions of high instantaneous luminosity and high number of pile up (PU) events are presented in a view of history monitoring and stable trend. RPC background, currents and charge was studies in depth with increasing luminosity and data driven estimations of all these parameters are reported at the extreme conditions of High Luminosity LHC (HL-LHC). First measurement of the top quark pair production cross section ( t t) in proton proton collisions at a center-of-mass energy of 5.02TeV is presented as a second part of this document for 27.4 pb?1 data collected by the CMS experiment at LHC. The measurements are performed by studying events containing at least one charged lepton. The measured cross section ist t= 69:5 6:1 (stat) 5:6 (syst) 1:6 (lumi) pb, with a total relative uncertainty of 12%. The result is in agreement with the expectation from the standard model. The impact of the presented measurement on the determination of the gluon distribution function is investigated.
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مولانا ابوالاعلیٰ مودودی

مولانا ابوالاعلیٰ مودودی
۲۲؍ ستمبر ۱۹۷۹؁ء کو مولانا ابوالاعلیٰ مودودی کی وفات سے یہ برصغیر ہی نہیں بلکہ پوری اسلامی دنیا بھی ایک ممتاز متکلم، ایک مضطرب مفکر، ایک دیدہ ور مفسر، ایک بے چین شارح دین، ایک قابل قدر ترجمان شریعت اور ایک بلند پایہ مصنف سے محروم ہوگئی۔
انھوں نے ۷۷ برس کی عمر پائی، ان گنت کتابوں کے مصنف ہوئے شروع میں ان کی تحریریں نکلیں تو جدید تعلیم یافتہ طبقہ کو محسوس ہونے لگا کہ ان میں وہ ساری باتیں ہیں جن کی تلاش ان کے ذہن کو ہے، جب وہ مغربی افکار کے ابلیس کی تلبیس سے دب کر اپنے تذبذب اور تشکیک کی بناء پر اسلام کو جامد اور غیر متحرک پارہا تھا تو اس کو مولانا مودودی کی تحریروں کے ذریعہ سے یہ احساس ہوا کہ کوئی اس کے تاریک اور منجمد ذہن پر ہلہ بول کر اس کو جھنجھوڑ رہا ہے، مولانا مودودی کی تحریروں میں شگفتگی بھی ہوتی، دلنشینی بھی، حرارت ایمانی کی گرمی بھی، نظر و فکر کی گرم جوشی بھی، منطقی دلائل کے یقین کی پختگی بھی، عالمانہ انداز میں کلام پاک اور حدیث کی جاندار تعبیر بھی، اسلام کے ناقدوں اور خصوصاً فرنگی معترضوں کے خلاف جارحانہ حملے بھی اور یورپی طرز فکر کی جرأت مندانہ تحدی بھی، اس لئے وہ شوق سے پڑھی گئیں، ان کا علم ایک بحرخار تھا، جس سے انھوں نے بقول استاذی المحترم مولانا سید سلیمان ندوی، ’’یورپ کے ملحدانہ افکار‘‘ کے خلاف ایک بند باندھنے کی کوشش کی اس میں ان کے قلم کی بے مثال قوت ان کا پورا ساتھ دیتی رہی۔
رفتہ رفتہ وہ ایک خاص مکتب فکر اور تحریک کے بانی قرار پائے جس سے صالح قیادت کے ذریعہ وہ مسلمانوں کی معاشرتی اور سیاسی زندگی میں طاقتور دینی روح دینی اخلاص اور دینی قدریں پیدا...

جانوروں کے مسائل و مشکلات اور ان کا اسلامی حل

There are countless cases of cruelty and abuse of animals in the present era which are not mentioned in Islamic law, It is a pity that most of these atrocities are taking place in the so-called civilized western countries. However, it is heartening to see that the protest against the cruel exploitation by many western animal rights activists is well organized and it is hoped that this will eventually prevail and the animals will be given their due legitimate rights will remain together. What is worrying is that the developing countries, most of which are Islamic countries, have begun to follow their Western masters. They use the West's (Intensive Farming Methods) pesticides, which are harmful to humans and animals and do more harm to the environment than benefit crops, and lead to millions of animals being traded, exported or Similarly, the experiments that are done with reference to new products that are behind the maximum profit and follow them in the form of other similar luxuries. This article describes instructional teachings offered by Islam in such matters, which are very helpful and useful in raising awareness.

Response of Three Stored Grain Insect Pests to Different Combinations of Phosphine and Essentialoils of Different Plants

The present study was carried out in Grain Research, Training and Storage Management Cell of the Department of Agri. Entomology, University of Agriculture Faisalabad. The effect of essential oils of three plants Melia azadarach (Bakain), Azadirachta indica (Neem) and Datura stramonium (Datura) and phosphine fumigation alone and in combination were evaluated for their repellent and mortality effect against Tribolium castaneum, Rhyzopertha dominica and Trogoderma granarium at various concentrations viz., 5 %, 10 % and 15 % for plant oils, while 100 ppm, 200 ppm and 300 ppm for phosphine fumigation. The effect of these plant oils and phosphine fumigation was also studied on F1 progeny of the test insects. The results showed that maximum repellency of Tribolium castaneum was observed Azadirachta indica which was 77.66 % and Trogoderma granarium which was 76.43% with Datura stramonium. In case of Rhyzopertha dominica it was 81.48 % with Azadirachta indica. For mortality assay, data was collected after 24 h, 48h and 72 h against plant oils. The results revealed that maximum mortality of Tribolium castaneum was observed in Datura stramonium which was 28.82 %. While in case of Rhyzopertha dominica observed maximum mortality was 25.45 % against Azadirachta indica. In case of Trogoderma granarium maximum mortality was observed at Datura stramonium which was 24.30 %. For combination of plant oils and phosphine concentrations data was taken after 24 h, 48 h and 72 h. Maximum mortality of Tribolium castaneum was observed at Azadirachta indica which was 90.55 % at a combination of 15 % concentration of plant oil and 300 ppm phosphine gas while of Trogoderma granarium it was 86.43 % at Melia azadarach at a combination of 15 % of plant oil and 300 ppm of phosphine gas . In case of Rhyzopertha dominica observed mortality was 93.22 % at Azadirachta indica at a combination of 15 % of plant oil and 300 ppm phosphine gas. Mortality of insects against phosphine gas was also observed. Data showed that maximum mortality of Tribolium castaneum was observed at 300 ppm of phosphine gas which was55.93 % and in Trogoderma granarium it was 46.33 % at 300 ppm gas concentration. While in case of Rhyzopertha dominica it was 64.41 % at 300 ppm phosphine gas concentration. After that from the survivors of test insects F1 progeny data was recorded after thirty days of releasing in fresh grains at 30 + 2̊C and 70 + 5 % R.H. results showed that maximum F1 progeny of each insect in the following form. i.e. 0 % > 5 % > 10n % > 15 % >. Where 0 % is control. Minimum F1 progeny was observed at 15 % concentration of plant oils. In case of combination of plant oil and Phosphine gas concentration trend was like this. 0 % > 5 % + 100 ppm > 10 % + 200 ppm > 15 % + 300 ppm. So minimum F1 progeny was observed at 15 % + 300 ppm gas combination in all test insects. While in case of alone phosphine gas concentration maximum F1 progeny was observed at 100 ppm concentration. Minimum F1 progeny was observed at 300 ppm.