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Superconducting Properties of Superconductor Thin Films

Thesis Info

Author

Fasih-Ud-Din

Department

Deptt. of Physics, QAU.

Program

Mphil

Institute

Quaid-i-Azam University

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2003

Thesis Completion Status

Completed

Page

70

Subject

Physics

Language

English

Other

Call No: DISS/M.Phil PHY/520

Added

2021-02-17 19:49:13

Modified

2023-02-19 12:33:56

ARI ID

1676715977568

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انکار بھی نہیں انھیں اقرار بھی نہیں

انکار بھی نہیں ، انھیں اقرار بھی نہیں
اتنا ہوا یہ دل کبھی لاچار بھی نہیں

دکھ درد ہم نے بانٹ لیے سارے شہر کے
آئی جو اپنی باری تو اک یار بھی نہیں

اس بخت کی یہ پستیاں بھی ہوں ملاحظہ
گل تو کجا ہے اپنے لیے خار بھی نہیں

اس طرح مفلسی کے ستائے ہوئے ہیں ہم
محرومیِ اناج ہے اور پیار بھی نہیں

جانے وہ کون لوگ تھے جن کو ملے ہیں یار
حاصل ازل سے ہم کو تو اغیار بھی نہیں

دولت خلوص کی ہے مرے پاس فہدؔ سب
اور وہ خلوص کا تو طلب گار بھی نہیں

دور الإنفاق في سبیل اللہ في رفاھیة المجتمع المعاصر في ضوء فقه السیرۃ

Spending in the cause of Allh is one of the most important ways for the welfare of society and all the divine books agreed about its vital role in the betterment of human lives. But it is obvious from Quraan that not everyone has capacity for it but only those who are saved from stinginess: And whoever is protected from the stinginess of his soul - it is those who will be the successful. (Al-Hashr: 09) It is also very relevant question in this regard that what should be spent? And how and where should be spent? Hence only that type of spending which is according to the need of time is worthy to be called as best use of it, as Prophet (Peace be upon Him) pointed out to the charity of water when Saad ibn e ubadah asked him about the best mean of charity after the death of his mother and people were in urgent need of water. So it is clear that the one who intended to charity must have the actual and original idea about the demand of those who are in crises and then he should decide to arrange the appropriate means in this regard. We found crystal clear indications in the seerat ur rasool (Peace be upon Him) about the appropriate spending in accordance with the demands of current time like the encouraging the release of slaves especially in the Makkah and the treaty of brotherhood among the immigrants and the ansaar and promoting the building of prophetic mosque and preparing the army for battles and promising the abode in paradise in response. This article deals with role of charity in welfare of current society by the proper means and ways, some of the important points are as follows: 1. Introduction. 2. Importance of Infaq in Quraan and Sunnah. 3. Examples of charity in accordance with the demands of society in light of seerah. 4. Charity endowments and its role in the well-being of society in the light of fiqh us seerah. 5. The needs of contemporary society and the role of Charity endowments. 6. Pre-protection from negativity, because prevention is better than cure. 7. Recommendations or proposals for proper expenditure

Pharmacological Screening of Indigenous Plants for Possible Gastrointestinal, Respiratory and Cardiovascular Activities.

The present study was undertaken to explore therapeutic potential of selected plants to provide scientific basis for the ethno-pharmacological uses pertaining to gastrointestinal, respiratory and cardiovascular systems. The crude ethanolic extract of Brachychiton populneus (Bp.Cr) exhibited relaxation of periodic contractions in isolated preparations of rabbit jejunum. The relaxant effect of Bp.Cr was confirmed to be attributed to opening of K+ ATP channels, which is further confirmed significantly (P<0.005) by in vivo experiments (i.e. Charcoal meal and fecal mass count). In isolated preparation of rabbit trachea, the Bp.Cr exhibited relaxation of contractions induced by K+(25 mmol) and CCh (1 μmol), being more potent against K+ (25 mmol) suggested the opening of K+ATP channels as possible mechanism. In isolated aortic preparation (denuded), Bp.Cr exhibited relaxation of contractions induced by K+ (25 mmol) and phenylephrine (1 µmol). In isolated preparations of rabbit paired atria, the Bp.Cr exhibited cardio depressant effects may be attributed to the known K+ ATP channels opening activity. In in vivo studies, Bp.Cr caused a significant (p<0.05) fall in MABP which can be attributed to the proposed K+ channels opening potential. Furthermore, Bp.Cr also showed significant (p<0.01) anti-emetic (CuSO4 induced) activities. The K+ ATP channel opener activity was found to be concentrated in the dichloromethane fraction of Bp.Cr (Bp.Dcm). The K+ ATP channel opener activity of Bp.Cr was found to be comparable to that of cromakalim. The crude extract of Cenchrus ciliaris L. (Cc.Cr) exhibited relaxant effect on the spontaneous and spastic contractions induced by K+ (80 mmol) in isolated rabbit jejunum, similar to that of verapamil, suggested the involvement of Ca2+ channel blocking(CCB) activity as possible mechanism. The spasmolytic activity is further confirmed significantly (P<0.005) by in vivo experiments (i.e. Charcoal meal and fecal mass count). In isolated preparation of trachea, the contractions induced by CCh (1 µmol) and K+ (80 mmol) were relaxed completely by Cc.Cr, being more potent against CCh (1 µmol), explaining the dual mechanism of muscarinic receptors antagonism and CCB activity, similar to dicyclomine. The Cc.Dcm was found to have CCB; while aqueous fraction of Cc.Cr (Cc.Aq) showed antimuscarinic activity. In isolated rabbit aorta(denuded), Cc.Cr exhibited α1-adrenergic agonistic activity, angiotensin II agonistic activity as well as CCB. The angiotensin II agonistic and CCB activity was concentrated in Cc.Dcm while α1-adrenergic agonistic activity was found to be concentrated in Cc.Aq. In isolated paired atrial preparation, Cc.Cr exerted cardio-stimulation via β1adrenoceptors agonist activity, as well as, cardio depressant activity of Cc.Cr can be attributed to already mentioned CCB activity. In vivo experiments showed that Cc.Cr significantly (p<0.05) reduced the MABP and heart rate which may be outcome of CCB activities of Cc.Cr.The crude ethanolic extract of Cyperus niveus (Cn.Cr) underwent relaxation of the induced contractions of CCh (1 µmol) and K+ (80 mmol) in isolated preparations of rabbit jejunum and trachea, suggested the relaxation by dual mechanism of antimuscarinic and CCB activities, similar to dicyclomine. The CCB activity was concentrated in Cn.Dcm while antimuscarinic activity was concentrated in Cn.Aq. The observed anti-muscarinic activity was further confirmed in isolated preparations of rat ileum. Cn.Cr also exhibited significant (p<0.005) anti-diarrheal (Castor oil induced), anti-motility (transit test) and anti-emetic (CuSO4 induced) activities. In isolated preparations of rabbit aorta (denuded), Cn.Cr showed contractile response which was found to be due to α1 adrenergic and HT2A serotonergic agonistic activities along with CCB activities. In isolated preparation of rabbit paired atria, Cn.Cr initially showed partial β adrenergic agonistic activity, along with cardio depressant effect which may be outcome of some constituent(s) possessing CCB activity. In in vivo experiments, the MABP and heart rate in normotensive anaesthetized rats was reduced significantly subsequent to administration of Cn.Dcm, which may be outcome of CCB activities of Cn.Dcm.Conclusion: Brachychiton populneus is known to possess folkloric repute as a remedy for asthma, cough, cardiac ailments, constipation and diarrhea; however, pharmacological screening of the plant extract exhibited spasmolytic, spasmogenic, bronchodilator, vasorelaxant, cardio tonic, hypotensive, anti-diarrheal, anti-motility and anti-emetic activities.Thus, provided scientific basis for its folkloric uses in multiple ailments. Cenchrus ciliaris L. is a grass of high nutritive value and possesses a folkloric repute as diuretic, anti-diarrheal, anti-asthmatic, emollient, lactogogue, purgative, stomachic, in kidney pain, sores, tumors and wounds; however scientific investigation of the plant extract exhibited spasmolytic, bronchodilator, vasorelaxant, cardio tonic, hypotensive, anti-diarrheal, anti-motility and antiemetic activities.Thus, provided scientific evidences for its folkloric uses in multiple ailments. Cyperus niveus Retz. is used in traditional system of medicines to manage various diseases including cancers, colic, common colds, dysentery, diarrhea, emesis, inflammations, chest troubles, as cordial, desiccant, stimulant, sedative, and diuretic; pharmacological evaluation of the plant extract exhibited spasmolytic, bronchodilator, vasorelaxant, cardio tonic, hypotensive, anti-diarrheal, anti-motility and anti-emetic activities. Thus, provided scientific evidences for its folkloric uses in multiple disorders.