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Primary Production Dynamics of Two Dominant Macrophytes in Wular Lake, a Ramsar Site in Kashmir Himalaya
Naseer Ahmad Dar,Aadil Hamid,Bashir Ahmad Ganai,Sami Ullah Bhat
Ecologia Balkanica , 2012,
Abstract: Growing season changes in the organic matter, organic carbon and chlorophyll content of the two dominant macrophytes, Nymphoides peltatum and Ceratophyllum demersum of Wular Lake, a Ramsar Site in Kashmir Himalaya were analysed during March- November 2011. The content of organic matter and organic carbon for Nymphoides peltatum were 114.1 g m-2 and 53.1 g C m-2 and Ceratophyllum demersum were 57.0 g m-2 and 26.4 g C m-2. Chlorophyll A (Chl a) and chlorophyll A+B (Chl a+b) pigments ranged from 1.75 mg g-1 (Chl a) and 2.1mg g-1 (Chl a+b) in Nymphoides peltatum to 4.41 mg g-1 (Chl a) and 5.69 mg g-1 (Chl a+b) in Ceratophyllum demersum. In full leaf out, the latter aquatic plants exceeded 15-20% coverage of the open water surface.Ceratophyllum demersum and Nymphoides peltatum achieved maximum growth in June and August respectively, but significant differences in their growth dynamics was observed. At the end of the vegetation period, these plants sink to the bottom and decompose.
ERCP complicated by pseudoanerysm of right hepatic artery: A rare case report
Mohmed Imran Wagay, Gh Mohammad Wani, Naseer Ahmad Choh, Owvass Hamied Dar
Asian Journal of Medical Sciences , 2015, DOI: 10.3126/ajms.v6i2.10546
Abstract: Endoscopic Retrograde Cholangio-Pancreatography (ERCP) has advantage of having bothdiagnostic and therapeutic utility and most common indication for endoscopic sphinterotomyis choledocholithiasis. Therapeutic ERCP is quite often associated with complications, mostcommon being acute pancreatitis followed by bleeding. Most common source of bleedingis small branches of pancreaticoduodenal artery (PDA) which lie close to papilla. We reporta rare case of leaking right hepatic artery pseudoanerysm following clearance of commonbile duct (CBD) stones by ERCP presenting with shock and upper GI bleed. DOI: http://dx.doi.org/10.3126/ajms.v6i2.10546 Asian Journal of Medical Sciences Vol.6(2) 2015 115-117
Directly Driven RO System by PV Solar Panel Arrays  [PDF]
Moustafa Elshafei, Anwar Khalil Sheikh, Naseer Ahmad
Open Journal of Applied Sciences (OJAppS) , 2013, DOI: 10.4236/ojapps.2013.32B007
Abstract: In this work the performance evaluation of directly driven Reverse Osmosis (RO) water desalination system by Photovoltaic (PV) arrays is investigated by a novice method. Reverse Osmosis water desalination system needs continuous supply of energy and on the other hand energy from the PV is intermittent in nature. The energy consumption of RO plant is strong function of clean water (permeate) flow rate and system pressure and they needs to be tuned to match the maximum power provided by the PV arrays. In this work a novice method to tune the RO system parameters by manipulating the position of the valve at the brine side of the RO system is proposed. A simple perturb and observe algorithm is used for automatic control of the valve position. The performance of the proposed battery less system is compared with a conventional system using PV, charge controller and battery. The proposed directly driven battery-less system provides more water per day than battery operated system.
Mass Limit of Neutron Star  [PDF]
Jehangir Ahmad Dar
International Journal of Astronomy and Astrophysics (IJAA) , 2014, DOI: 10.4236/ijaa.2014.42036
Abstract:

The mass limit of neutron star has still remained a mystery. The existing Tolman-Oppenheimer-Volkoff (TOV) equation for calculating the limit always gives different values, by introducing different assumptions and having been predicted like 0.7 Mo, 3.2 Mo, 3.6 Mo, where Mo = 1.98 × 1030 Kg. There is a need of some better technique to adopt other than TOV relation to seek out the value. In this paper, a new relation between the mass of the collapsing star and its average density ρ has been derived and used to calculate the limit of neutron star. The conditions in radii between Schwarz Child’s radius and the actual radius of the collapsing star have been introduced to calculate the mass of star above which it will transform into a black hole and below it to a neutron star. A new constant, JN = 8.53707554

TYPHOID PERFORATIONS
Naseer Ahmad Tariq
The Professional Medical Journal , 1998,
Abstract: Heal perforation is one of the most serious complications of the typhoid fever, a disease still common in thispart of world. Three hundred patients of typhoid perforations were managed by the surgical department ofNishtar Hospital Multan & B.V.H. Bahawalpur over a period of 42 months. Maximum number of patientspresent during second decade followed by the 3rd decade. 30% of the patients presented early within 24hours after the onset of the perforation. 18% cases presented between 24-48 hours and 52% werehospitalized after 48 hours. 70% of the patients belonged to the rural areas & majority of the patients whoreported late belonged to this group. Clinical diagnosis was made in 100% cases due to high index ofsuspicion. Preoperative fluid and electrolyte correction and blood transfusion were always given beforesurgical intervention. Primary closure of perforation was undertaken in early cases. Morbidity in the patientswith delayed presentation was higher as compared to the early cases, lleostomy for the patients with delayedpresentation ( > 48 hours) produced good results with significant decrease in the mortality. We recommendileostomy for the cases who are poor surgical risk or who are admitted to the hospital very late or the caseshaving friable gut wall at the time of laparatomy.
Breeding Strategies for Improving Rice Yield—A Review  [PDF]
Mudasir Hafiz Khan, Zahoor Ahmad Dar, Sher Ahmad Dar
Agricultural Sciences (AS) , 2015, DOI: 10.4236/as.2015.65046
Abstract: An increase in productivity is always one of the main goals of any crop breeding program including rice. However, many goals can be identified for this crop varying in importance from region to region, country to country, and even within a given country. Increase in grain yield potential is the major goal of almost all rice breeders programs. The major impacts are related to the development of new strategies to increase the genetic grain yield potential of the varieties. Rice breeders have been very successful in improving the crop. Some milestones are the contribution to the green revolution with the semi-dwarf varieties, the new rice plant type and hybrid rice. The main breeding method used to improve rice is the pedigree, but development of hybrids and population improvement are added to the breeder’s portfolio. Breeders have been taking advantage of biotechnology tools to enhance their breeding capacity; however, many programs are still struggling on how to integrate them into the breeding programs and how to balance the allocation of resources between conventional and modern tools.
Application of Seismic Attributes for Delineation of Channel Geometries and Analysis of Various Aspects in Terms of Lithological and Structural Perspectives of Lower Goru Formation, Pakistan  [PDF]
Tayyab Muhammad Naseer, Shazia Asim, Mirza Naseer Ahmad, Farrukh Hussain, Shahid Nadeem Qureshi
International Journal of Geosciences (IJG) , 2014, DOI: 10.4236/ijg.2014.512121
Abstract: Miano area is one of the distinct major hydrocarbon producing fields of the Lower Indus basin. Lower Goru is the reservoir strait in this area. The aim of the present study is to exploit the channels reservoirs and other stratigraphic features in such a terrain where there is always a challenge for the geoscientist to search and exploit the channeled reservoirs. To resolve this issue we have utilized attribute analysis on high resolution 3D-seismic data for the detailed comparative studies for the channels. There are many astonishing features that are identified in the current study, which could not otherwise be easily enhanced with the help of 2D Seismic Data. Seismic attributes such as coherency, frequency (are also appropriate for lithological discrimination), which are sensitive to the channel edges are applied for the channel delineation and their geometrical analysis. Spectral decomposition techniques are also applied for the delineation of channels and to appropriately select the best band for channels identification. Three types of channel geometries are recognized: 1) highly sinuous channel; 2) narrow-broad meandering belts; 3) moderate to high sinuous channel. NW-SE, N-W trending faults can be helpful to compartmentalize the reservoir. Instantaneous and dominant frequency are more beneficial for further field development based on Gamma Ray logs from nearby drilled wells and dimensional perspectives analysis of the channel reservoir.
Study of impact materials of akhnoor meteor crater in Jammu and Kashmir (India)  [PDF]
Naseer Iqbal, Ajaz Ahmad, Tabasum Masood, M. N Vahia
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.36058
Abstract: A sample of Akhnoor meteor crater, which fell on 2nd January 2009 in Jammu District, Jammu & Kashmir, India, has been analyzed for ele-mental composition by Spectroscopic tech-niques. Concentrations of 17 major, minor and trace elements were determined. The authentic-ity of the meteorite sample was established by comparing its composition with those of stan-dard meteorites/chondrite. The classification of the sample has been made by comparing the abundances and concentration ratios of ele-ments with other known meteorites.
Smart Phone Application Evaluation with Usability Testing Approach  [PDF]
Naseer Ahmad, Muhammad Waqas Boota, Abdul Hye Masoom
Journal of Software Engineering and Applications (JSEA) , 2014, DOI: 10.4236/jsea.2014.712092
Abstract: In this paper, we present a narrative role methodology based on different people’s opinions, which is now implemented in our research environment for the purpose of testing novel techniques, the usability testing of most common used smart phones such as Android and Apple smart phone application. This research analysis is carried out for various corresponding features to compare or evaluate different features on the basis of modern smart phones’ operating system, framework for hardware and software, battery life and many more features. Usability testing of smart phones’ software application is a promising research context that nowadays faces a number of challenges because of sole features of mobile phones, narrow bandwidth, varying environmental factors and unreliability of wireless connection or networks. A number of questionings are applied to accumulate user’s opinion about ongoing features. Users of Android and Apple smart phones reply by answering based on their routine life usage experience. In this paper, we will also elaborate and provide a new proposed model for mobile devices.
Comparative Analysis of Operating System of Different Smart Phones  [PDF]
Naseer Ahmad, Muhammad Waqas Boota, Abdul Hye Masoom
Journal of Software Engineering and Applications (JSEA) , 2015, DOI: 10.4236/jsea.2015.83012
Abstract: Nowadays rapidly increasing technology is mobile phone technology in telecommunication sector. This mobile device technology has great effect on everyone’s life. This technology has reduced the burden of people in their daily life. To manage the rising demand for such mobile devices, numerous operating systems came in the market as a platform upon which modern application can be produced. As a result, numbers of platforms and essential depository describe these platforms; customers may or may not be aware of these platforms that are appropriate for their needs. In order to solve this issue, we examine the most famous mobile phone operating systems to decide which operating system is most suitable for developers, business applications as well as casual use. In this paper we make assessment on the popular operating systems of mobile devices available in the business market, and on behalf of such assessment we distinguish that operating system OS is much useful of its particular characteristics compared with other systems.
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