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匹配条件： “Ishrat Siddiqa Lodhi” ，找到相关结果约231条。
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Ability Grouping and Its Effect on Students’ Performance in Science at Primary Level
Ishrat Siddiqa Lodhi,Dr. Farhana Khurshid
International Journal of Social Sciences and Education , 2011,

Abstract: The aim of the study is to see the impact of ability grouping on science performance of the students at primary level. The variables included in this research are classroom setting both homogeneous and heterogeneous, (independent variable) and science performance (dependent variable). Population of the study included 5th grade students of Federal Government Schools in Rawalpindi (Pakistan). The sample is the 5th grade students and sample size is 48 students. The design of the study is experimental. Before teaching pre-test is conducted to check the prerequisite knowledge of the students included in both groups and then both groups are taught in different types of classroom settings. Experimental group is taught in homogeneously grouped classes and they are divided in three groups, high achievers, average students and low achievers, and all these groups are instructed in three different classes and control group is taught in mixed ability setup. After teaching the module States of Matter, post-test is applied to assess the difference in the performance of both groups. From the overall results, it is clear that students in experimental group have performed better as compared to the students in control group. Therefore, it has been proved that ability grouping has a positive effect on student’s science performance at primary level.

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Association between emotional intelligence and academic success among undergraduates: A cross-sectional study in KUST, Pakistan
Ishrat Siddiqa Lodhi,Ishtiaq Hussain,Makhdoom Ali Syed,Qaiser Suleman,Rashida Parveen,Ziarab Mahmood
- , 2019, DOI: 10.1371/journal.pone.0219468

Abstract:

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Mixed Convection Boundary Layer Flow over a Vertical Flat Plate with Radiative Heat Transfer [PDF]
Sadia Siddiqa, M. A. Hossain
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.37104

Abstract: In this article, the problem of mixed convection boundary layer flow of viscous fluid along a heated vertical plate is examined. In the analysis radiative component of heat flux emulates the surface temperature. Appropriate set of variables are embraced here which reduces the governing boundary layer equations into dimensionless form. Subsequently, a group of continuous transformation is applied on the dimensionless equations in order to obtain the parabolic partial differential equations for the regimes where modified Richardson number, Ri*, is 1) small i.e. when Ri* 1, 2) large i.e. when Ri* 1, and 3) covers all its values i.e. when 0 ≤ Ri* ≤ ∞. The system of equation for the corresponding regimes are thus integrated numerically via straightforward finite difference method along with Gaussian elimination technique. Its worth mentioning that results obtained here are valid particularly for the liquid metals for which Pr 1. Moreover, the numerical results are demonstrated graphically by showing the effects of important physical parameters, namely, the modified Richardson number (or mixed convection parameter), Ri*, surface radiation parameter, R, and Prandtl number, Pr, in terms of local skin friction and local Nusselt number coefficients. In addition, comprehensive interpretation of thermal energy distributions is also given in terms of heatlines which is termed as good tool to visualize the flow patterns.

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CU-375 (MULTILOAD)
AISHA SIDDIQA
The Professional Medical Journal , 2006,

Abstract: Objectives: To study the complications associated with the use of multi-load CU375 and reasonsfor discontinuing its use. Design: Descriptive Study. Place and duration of study: From 10th January 2002 to 10thJanuary 2004. Private Clinic: Saleem Medical Complex Quetta. Patients & Methods: The study populationincluded 100 women aged 22 – 35 years requiring contraception in the form of multi-load CU 375. Patients and insome cases their husbands were counseled and selected according to a pre-set proforma. Results: Out of 100patients the mean age of the acceptors was 30 years and mean parity was 4. Insertion of the device was very easy,main complications were disturbed menstrual cycle, heavy menstrual bleeding experienced by 40%, inter-menstrualspotting by 8% and continuous vaginal bleeding by 3%, 2% of the patients had gestational ammenorrhea of 8 &12weeks. Vaginal discharge was complained of by 10%. There were two expulsions and 7 removals, reasons forremoval were metrorrhagia, menorrhagia, pain and spotting in most cases. There were no cases of perforation orectopic pregnancy. Conclusion: It was concluded that multi-load CU 375 is an effective contraceptive device withmenstrual irregularities and pelvic inflammatory disease being the main complications and principle causes forremoval of IUCD.

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Photonics from Al-Haitham to Optoelectronics of AMTEC [PDF]
M. A. K. Lodhi
Journal of Computer and Communications (JCC) , 2013, DOI: 10.4236/jcc.2013.17017

Abstract:

The word “photonics” is derived from the Greek word “photos” meaning light. It covers all technical applications of light over the whole spectrum. Most applications, however, are in the range of the visible and near infrared light. With a brief history of classical work and tenets of optics, we will present electrical circuit of a thin-film device used in a fuel cell, called Alkali Metal Thermo Electric Convertor (AMTEC).The device uses infrared radiation to knock out electrons from some alkali metal, which after going through a circuit and having done the prescribed work, meet the ions again. The system is closed and continues working as long as the radiation source is kept on. The longevity, power and efficiency of the device depend inversely to some extent on the thickness of electrodes used for collecting electrons freed from the alkali metal, as well as of the solid electrolyte. The details of the device’s circuit comprising both electrical and optical functions will be discussed.

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Single and Sequential Extraction of Copper by Different Extractants from Different Peat Soil Samples of Bangladesh [PDF]
Ishrat Jahan Sanchary, Tania Akter
Open Journal of Soil Science (OJSS) , 2021, DOI: 10.4236/ojss.2021.1112030

Abstract: A comprehensive in vitro study on single and sequential extraction methods for Cu exraction by different extractants of distinct chemical nature from some peat soils of Bangladesh was conducted to assess the pattern of metal-extractability in drying and wetting sequences. Samples were collected from peat basins of two different districts of Bangladesh (Gopalgonj and Bagerhat) and an incubation study was designed and conducted in which soils were incubated to three alternate drying and wetting cycles for 21 days. Single and sequentially extracted Cu ions in all three cycles and by all three selective extractants were compared. Maximum amount of Cu was extracted in drying days and 1M HCl extracted the largest proportion of Cu from all the soils in each incubation time. Conversely, 1M NH₄Cl was the least effective extractant for extracting Cu by both single and sequential process in either day of incubation. Considerable amount of Cu was extracted by 0.005 M DTPA in dry periods. In general, single extraction was found to be more effective in extracting Cu in the alternate drying and wetting cycles from the peat soil samples except for 1M HCl in initial drying days.

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Dynamics of Charged Plane Symmetric Gravitational Collapse
M. Sharif,Aisha Siddiqa
Physics , 2010, DOI: 10.1007/s10714-010-1071-8

Abstract: In this paper, we study dynamics of the charged plane symmetric gravitational collapse. For this purpose, we discuss non-adiabatic flow of a viscous fluid and deduce the results for adiabatic case. The Einstein and Maxwell field equations are formulated for general plane symmetric spacetime in the interior. Junction conditions between the interior and exterior regions are derived. For the non-adiabatic case, the exterior is taken as plane symmetric charged Vaidya spacetime while for the adiabatic case, it is described by plane Reissner-Nordstr$\ddot{o}$m spacetime. Using Misner and Sharp formalism, we obtain dynamical equations to investigate the effects of different forces over the rate of collapse. In non-adiabatic case, a dynamical equation is joined with transport equation of heat flux. Finally, a relation between the Weyl tensor and energy density is found.

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Singularity in Gravitational Collapse of Plane Symmetric Charged Vaidya Spacetime
M. Sharif,Aisha Siddiqa
Physics , 2010, DOI: 10.1142/S0217732310033864

Abstract: We study the final outcome of gravitational collapse resulting from the plane symmetric charged Vaidya spacetime. Using the field equations, we show that the weak energy condition is always satisfied by collapsing fluid. It is found that the singularity formed is naked. The strength of singularity is also investigated by using Nolan's method. This turns out to be a strong curvature singularity in Tipler's sense and hence provides a counter example to the cosmic censorship hypothesis.

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Transient Combined Convective Heat Transfer over a Stretching Surface in a Non-Newtonian Nanofluid Using Buongiorno’s Model [PDF]
Rama Subba Reddy Gorla, Buddakkagari Vasu, Sadia Siddiqa
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.42050

Abstract: The present paper investigates the transient mixed convective boundary layer flow of an incompressible non-Newtonian quiescent nanofluid adjacent to a vertical stretching surface. The effects of the Brownian motion and thermophoresis are included for the nanofluid. Using appropriate non-similarity transformations the non-dimensional, coupled and highly non-linear system of equations is solved numerically using the efficient Keller-box implicit finite difference method for the whole transient from t=0 (initial state) to $\"\"$ (final steady-state flow). The box method is unconditionally stable. Numerical results for dimensionless velocity (f’), micro-rotation (g), temperature (θ), nanoparticle volume fraction (Φ) at final steady state flow, skin friction function ( $\"\"$ ), Nusselt number function ( $\"\"$ ) and Sherwood number function ( $\"\"$ ) have been presented on various parameters inform of tables and graphs. The results indicate that as Nb and Nt increase, the Nusselt number decreases whereas Sherwood number increases at initial and early state time but decreases at the final steady state time. As the K increases, the friction factor decreases whereas surface mass transfer rate and the surface heat transfer rates slightly increase. The results reveal that there is a smooth transition of flow from unsteady state to the final steady state. A special case of our results is in good agreement with an earlier published work. The study has many practical applications such as extrusion of plastic sheets, paper production, glass blowing, metal spinning and drawing plastic films.

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Remediation of Arsenic Toxicity in the Soil-Plant System by Using Zinc Fertilizers [PDF]
Ishrat Jahan Sanchary, Shah Muhammad Imamul Huq
Journal of Agricultural Chemistry and Environment (JACEN) , 2017, DOI: 10.4236/jacen.2017.61002

Abstract: Availability of soil arsenic (As) and plant As at various levels of zinc (Zn) and As applications were examined. A pot-culture experiment with a leafy vegetable, Kalmi (Ipomoea aquatica), on an Inceptisols, was conducted where As was applied with irrigation water at the rates of 0 mg/L (As control), 0.5 mg/L, 1 mg/L and 2 mg/L and Zn was added to the soil as ZnCl₂ solution at the rate of 0 mg/L (Zn control), 1 mg/L, 2 mg/L and 3 mg/L during pot preparation. The experiment was conducted in triplicates for 45 days till the plants were grown to maturity. At the end of the experiment the remedial effect of Zn on As toxicity was examined and as such, yield parameters, As and Zn accumulation in Kalmi plants, residual concentrations of As and Zn in soils and plants were measured. It appeared from the present study that there exists an antagonistic relationship between Zn and As i.e., Zn in soils was found to reduce As availability in soils as well as its accumulation in plants, particularly at an elevated application rate of 3 mg/L Zn. The findings could be used as a strategy to mitigate arsenic toxicity in As contaminated soils.

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