oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 3 )

2018 ( 2 )

2017 ( 5 )

2016 ( 12 )

Custom range...

Search Results: 1 - 10 of 594 matches for " Saira Hameed "
All listed articles are free for downloading (OA Articles)
Page 1 /594
Display every page Item
2-(2-Fluorobiphenyl-4-yl)-N′-(propan-2-ylidene)propanohydrazide
Saira Khanum,Muhammad Farman,Nasim Hasan Rama,Shahid Hameed
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810009049
Abstract: In the title compound, C18H19FN2O, the hydrazide side chain is approximately perpendicular to the central ring [dihedral angle = 76.80 (5)°]. The F atom is disordered over two positions with occupancies of 0.818 (2) and 0.182 (2). The packing consists of chains of molecules parallel to the a axis, connected by a bifurcated N—H...(O,N) hydrogen bond and a weak Cphenyl—H...O hydrogen bond. The packing is extended to a layer structure parallel to the ab plane by a weak Cphenyl—H...F hydrogen bond.
1-(4-Ethoxybenzoyl)-4-(4-methoxyphenyl)thiosemicarbazide
Saira Khanum,Muhammad Farman,Nasim H. Rama,Shahid Hameed
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809036599
Abstract: The title compound, C17H19N3O3S, crystallizes with two closely similar independent molecules related by a pseudotranslation of c/2. Each molecule consists of three approximately planar moieties centred on the N2CS group and the two ring systems. The packing involves classical H bonds of the form Namide—H...S and Nhydrazine—H...OC, together with various weak hydrogen bonds and Nhydrazine—H...π interactions. The overall packing is three-dimensional, but layer substructures parallel to the xz plane can be readily identified. Each molecule forms a topologically equivalent set of hydrogen-bond interactions.
4-Ethoxybenzohydrazide
Muhammad Farman,Saira Khanum,Shahid Hameed,Peter G. Jones
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812038998
Abstract: The title compound, C9H12N2O2, is approximately planar (r.m.s. deviation = 0.13 for all non-H atoms). The carbonyl O atom is involved as acceptor in three different hydrogen-bond interactions. One N—H...O and the C—H...O(carbonyl) contact together with a weak C—H...O(ethoxy) interaction link the molecules into sheets parallel to (102). These are further linked into a three-dimensional network via the remaining C—H...O(carbonyl) hydrogen bond and a C(methylene)—H...π interaction
THE STORY OF EXCHANGE RATE MOVEMENT BY CHINA AND ITS IMPACT ON USA ECONOMY
Muhammad Akram,Muhammad Ramzan,Sundus Naveed,Saira Hameed
Australian Journal of Business and Management Research , 2011,
Abstract: Exchange rate is an important element of the country’s economic health. It is one of the most scrutinized, anatomized and manipulated economic dimension. The purpose of this study is to examine the impact of exchange rate of China on the US trade, employment and on its currency as well. The approach to this paper is to answer the questions such as the mechanism selected by China for its exchange rate determination? What are the interests of China in adopting the fixed exchange rate strategy? How this step of China is affecting the U.S.? What steps are taken by USto abandon China’ policy? This paper concludes that US economy is badly affected; China snatches the jobs of US, exports of China rushes towards US economy while imports from US towards China did not come with that pace. This happens because of exchange rate and trade mechanism adopted by China. Moreover this policy of China is beneficial for its economy but not for the well being of the Chinese people. This paper is beneficial for the researchers, students, policy makers, politicians and economists related to international finance area.
THE TALE OF FREEZING FOREIGN CURRENCY ACCOUNTS IN PAKISTAN
Muhammad Akram,Muhammad Ramzan,Saira Hameed,Sundus Naveed
Business and Management Review , 2011,
Abstract: Foreign exchange reserves help in maintaining the balance of payments, hence assured the financial stability ofa country. The intention of the study is to observe the reasons and impacts of freezing foreign currency accounts (FCAs) in Pakistan economy in May 1998 after nuclear explosions. The approach to this paper is to answer the questions such as’’ why was it essential for Pakistan to conduct nuclear explosion”? ‘’ Which countries had imposed sanctions against Pakistan and what was it impacts?’’. ‘’What are the reasons relatedfreezing the foreign currency accounts and the impacts of freezing the foreign currency accounts on Pakistan economy?’’. ‘’How did the Government handles the situation?” This paper concludes that Pakistani government could not handle the affair in an appropriate manner which leads to the brutal economic nuisanceboth internally and externally. The stock market was crashed because the investors lost their confidence. This study is beneficial to the academicians, depositors, bankers, politicians and policy makers for the development of the economy.
Synthesis, Characterization and Metal Ion Chelating Efficiency of an Environment-Friendly Copolymers Containing Dithio Formic Acid and Thiosemicarbazide or 1,2,4-Triazole Group  [PDF]
Ayad Hameed
International Journal of Organic Chemistry (IJOC) , 2013, DOI: 10.4236/ijoc.2013.31002
Abstract:

Six phenolic monomers (M1 - M6) have been synthesized, namely, potassium-3-(ortho,para)-hydroxy benzoyl dithiofor- mate (M1 and M2), (ortho,para)-(4-amino-5-mercapto-1,2,4 triazol-3-yl)-phenol (M3 and M4), (ortho,para)-hydroxy benzoic acid thiosemicarbazide (M5 and M6) and twelve novel chelating terpolymers (P1 - P12) were synthesized by ter- polymerization condensation reaction of these monomers with phenol or bis phenol-A and excess of formalin in basic medium. The monomers (M1 - M6) and their co-polymers (P1 - P12) were characterized by FT.IR, H1-NMR, elemental analysis and thermal analysis (TGA) and according to data obtained the structures of these compounds were proposed. Analytical evaluation of chelating selectivity of these polymers toward (Co2+, Cr3+, Cu2+, Cd2+, Pb2+) were achieved by batch equilibrium method, the results show that all synthetic resins have high efficiency toward (Cr3+) and less effi- ciency toward (Co2+, Cu2+, Cd2+ and Pb2+).

 

A New Schiff Base Derivatives Designed to Bind Metal Ion (Cu, Co): Thermodynamics and Biological Activity Studies  [PDF]
Hanaa Hameed Haddad
American Journal of Analytical Chemistry (AJAC) , 2016, DOI: 10.4236/ajac.2016.75041
Abstract: Schiff base synthesis is usually acid catalyzed and it usually requires refluxing the mixture of aldehydes and amine in ethanolic solution. Synthesis and characterization of Schiff base ligands derived from substituted amine and salicylaldehyde and their complexes (Cu2+, Co2+) are reported. The ligands and ligand-complexes were characterized by melting point, FTIR, CHN-elemental analysis and UV-Visible analysis. The UV-Visible and elemental analysis of complexes established (1:2) mole ratio (M:L). The stability constant and thermodynamic parameters (K, ΔG, ΔH, ΔS) were determined at different temperature (30 - 40)°C which established that the metal-complexes were very stable. The review describes the promising biological activities of Schiff base and their metal complexes.
Options for Greenhouse Gas Mitigation Strategies for Road Transportation in Oman  [PDF]
Patrick Amoatey, Hameed Sulaiman
American Journal of Climate Change (AJCC) , 2017, DOI: 10.4236/ajcc.2017.62011
Abstract: Oman is a fast developing country where about 76% of registered vehicles as of 2014 were private cars with approximately one private car per household. The growth of automobile is faster than the growth of human population. From 2000-2009, Omani population has increased by 2% per annum while automobile usage in the country has increased by 4.3%. The leadership of Sultanate of Oman has pledged to cut down greenhouse (GHG) emissions by 2% as a commitment to United Nation Framework Convention on Climate Change (UNFCCC). Due to very limited public transportation system, traffic congestion and emission from vehicles are high during working days since majority of individuals uses private vehicles as only means of transport. This paper seeks to combine mitigation measures adopted in selected Middle East and North Africa (MENA) and UNFCCC to suggest cost-effective measures suitable in reducing GHG emissions from road transportation sector in Oman. These measures will specifically reduce vehicular emissions during working days where car occupancy rates are very low in an economically sustainable way.
DETERMINANTS OF DEPRESSION IN FEMALE ADOLESCENTS AND YOUTH
SAIRA AFZAL
The Professional Medical Journal , 2008,
Abstract: Introduction: Adolescents and youth are the main human resource for a nation. Depression is agrave yard for hopes and prosperity making the generation sad, inactive, and having suicidal thoughts. Thus everyeffort should be made to create awareness and eliminate depression from our youth. Objective: To find out the psychosocialdeterminants of depression in female adolescent and youth. Design: Case control study. Place and duration:Lahore cant urban area, from March, 2007 to July, 2007. Material and methods: It was a community based case controlstudy. Total 400 young females were selected. 200 cases of depression and 200 in the control group. An interviewschedule including a structured, pre-tested and bilingual questionnaire was used after taking consent. SPSS and Epiinfo were used for data analysis. Chi square test was applied. Results: In this study the depression in adolescent andyoung females had statistically significant relationship with unemployment, underage marriage, early child bearing,infertility, violence, sexual harassment(p<0.05). The family history of psychiatric ill ness in first degree relatives had nostatistically significant association with depression in these females (p>0.05). Conclusion: The statistically significantpsychosocial determinants of depression in young and adolescent females should be rectified by creating awarenessin the society.
PUERPERAL BREAST ABSCESSES
SAIRA SALEEM
The Professional Medical Journal , 2008,
Abstract: Objectives: The aim of this study was to compare the management of puerperal breast abscess by ultrasound guidedpercutaneous drainage v/s incision and drainage with special attention to resolution time and complications. Setting: Allied Hospital Faisalabad.Period: Jan 2005- June 2007. Patients and Methods: 60 patients with puerperal breast abscess were studied. Patients were divided into twogroups randomly after informed consent. In Group A; patients were treated with percutaneous drainage under local anesthesia while GroupB patients were treated by conventional incision and drainage, and results were compared with reference to resolution time and complicationsrate using student’s t-test. Results: By percutaneous method abscess healed in 5-8 days time. Recurrent abscess was found in one case (3%),milk fistula formation in one case (3%) and no residual abscess was found. There was no scar formation, induration or distortion of the breastparenchyma. Breast-feeding was interrupted in four patients (13%) only due to milk fistula (one case), recurrent abscess (one case) andpatient’s own preference (two cases). On the other hand by conventional method healing took 15-25 days with pain and discomfort of dailydressings, scarring and cessation of breast feeding in most of the cases. Conclusion: Percutaneous ultrasound guided placement of suctiondrainage catheter in puerperal breast abscess for 5-8 days is less invasive, high resolution rate, scarless, low complication rate and preservesthe function of breast-feeding as compared to conventional incision and drainage.
Page 1 /594
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.