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Articles by Iftikhar Ahmad
Total Records ( 20 ) for Iftikhar Ahmad
  Iftikhar Ahmad , Mahboob Akhtar and M. Shafi Nazir
  Study pertaining to variable transplanting time on agronomic traits of fine rice (Basmati-385) revealed that the crop transplanted with 30-day old seedlings during 2nd week of July produced increased number of panicle bearing tillers and heavy grains, resulting in the maximum grain yield of 4.2 t ha -1, while delayed transplanting during the 3rd week of July resulted in the minimum grain yield of 2.6 t ha -1.
  Iftikhar Ahmad , Mahboob Akhtar and M. Shafi Nazir
  Investigation on the effect of seedling age on agronomic traits of fine rice revealed that forty days old seedlings resulted in increased number of panicle bearing tillers, which produced the maximum grain yield of 3.7 t ha -1, while fifty days old seedlings gave the minimum grain yield of 3.1t ha -1. Number of spikelets panicle -1 and 1000-grain weight were also improved, though the differences among the treatments were not large enough to reach the level of significance.
  Iftikhar Ahmad , Syed Asif Ali and Barkatullah
  In this study, various repair methods have been discussed with reference to the cavitation damages in hydraulic turbines. The study is focused on the fact that timely and proper repair of the cavitation damages results in the better performance and increased efficiency of the equipment. On the other hand, if left un-repaired or improperly repaired, theses damages cause further deterioration of the equipment. The aim of the study is to provide an overview of the various traditional and modern techniques to the power plant maintenance crew. Various repair methods have been discussed with their merits and demerits. Outlay of an effective repair program that can be integrated with on-line monitoring system is presented. A software approach to integrate repair program with an on-line vibration monitoring system is also proposed. The study is expected to provide better understanding of cavitation repair methodologies based on the plant operating conditions and various turbine construction materials.
  Faizan Gul Awan , M. Ali Iqbal , M. Abdul Qadir and Iftikhar Ahmad
  Mobility management schemes such as Mobile IP rely on handling the transient data after the Mobile Node (MN) moves into a new domain. In this way the transient data arriving at the old location will get dropped and thus result in loss of important data. We introduce the idea of Boundary Access Point in conjunction with the buffering capability at the Home/Foreign Agent or the gateway router. This helps in transferring the transient data to the new location in a minimum amount of time in addition to reducing the data loss. The key idea is to use the access points present at the boundaries of an administrative domain that we call Boundary Access Points to monitor the mobile device movement. Buffering helps in preserving the incoming data for the duration when the MN cannot receive it.
  Iftikhar Ahmad and Abdur Rashid
  In this study, we present a comparison of traditional and modern techniques for monitoring hydropower plants. Traditionally, in Pakistan, the maintenance of hydropower plants is based on periodic-based corrective techniques, which involves shutdowns of plants over specified periods. The method not only restricts the operator to wait for the periodic shutdown for routine maintenance, but also proves to be more costly in case of major defects occurring in the plant. We propose on-line monitoring of the equipment, which involves continuous observation of the system parameters without system or equipment being stopped. The outcome is the early detection of any abnormality/fault and limiting of the severity of any potential damage to the system.
  Iftikhar Ahmad , Sh. Muhammad Nawaz and Muhammad Tayyab
  The best utilization of raw material for manufacturing the optimum quality of yarn has become inevitable for the spinning mills to face the global competition. Yarn evenness and hairiness are the most important parameters from quality point of view and largely depend upon the fibre length and micronaire value, which are considered the foremost quality parameters for the selection of raw material. It is the purpose of this study to investigate the effect of cottons differing in micronaire value and fibre length on yarn evenness and hairiness so as to contribute a part in improving the raw material utilization.
  Iftikhar Ahmad , Naeem Iqbal , Muhammad Iqbal , Zahoor Aslam and Ejaz Rasul
  The studies were undertaken to investigate the response of rice cultivars under saline conditions. Salinity upto 10 dSm–1 did not affect germination percentage in all varieties but the same level of salinity significantly affected plant height, fresh as well as dry weight of root and shoot and total number of tillers per plant. Germination percentage was not affected in NR1 and NR6 even at 20 dSm–1 salinity level but BAS 370 was severely affected (70.00 percent) at this level of salinity. Regarding parameters studied, NR6 and IR6 showed adaptability under saline conditions.
  Aly Khan , S. Shahid Shaukat and Iftikhar Ahmad
  A survey of nematode communities associated with chilli fields in eight localities of lower Sindh was conducted. In all eight species were recorded viz., Meloidogyne sp. larvae; Helicotylenchus indicus; Pratylenchus penetrans; Tylenchus sp. larvae; Pratylenchus thornei; Tylenchorhynchus annulatus; Psllenchus hilarulus; Hoplolaimus indicus and Aphelenchus avenae. A principal component ordination showed the relationships between localities and the species. Cluster analysis revealed the grouping of the nematode communities. Two main groups could be recognized, a small group having large populations of Meloidogyne sp. larvae and a large group comprising of communities with saprophytic nematodes and parasitic species such as Helicotylenchus indicus, Tylenchorhynchus annulatus and Pratylenchus spp. with variable densities.
  Javeed Iqbal Mirza , Ravi P. Singh and Iftikhar Ahmad
  About 57 Pakistani wheat lines including 49 NUWYT lines (National Uniform What Yield Trial) were analyzed for the identification of leaf rust resistant genes by using twelve Mexican Puccinia recondita tritici pathotypes. Postulation showed the presence of leaf rust resistant genes Lr3, Lr10,Lr16,, Lr17, Lr21, Lr23, Lr26, Lr27+31, Lr13 and Lr1. One line Sarsabz was found resistant to all Mexican pathotypes used and had other unidentified genes in addition to Lr16. Most of the Veery derived lines had Lr26, which is associated with 1B1R translocation. Lr13, closely associated with Lr23, was also postulated in some lines. The lines were also evaluated for adult plant resistance and area under the disease progress curve (AUDPC) showed varying behavior. AUDPC ranged from 0%, for highly resistant to 100%, for the most susceptible one. Analysis indicated presence of good adult plant resistance in the lines.
  Shazia Iram , Iftikhar Ahmad and M. Ashraf
  The root and foliar diseases caused by soil-borne fungi of rice were assessed in main rice-wheat cropping areas of Punjab at the heading stage of the rice crop. Disease severity scales 0-3 and 0-5 were used for root rot and foliar diseases, respectively. The highest mean disease intensity of root rot was 58.88 in Sialkot and lowest 42.21 in Narowal. In case of foliar diseases brown spot, bacterial blight and sheath blight were 100% prevalent in Gujranwala whereas bakanae was present in traces in all four districts of Punjab. In Sheikhupura, blast was highly prevalent (20%) while in Gujranwala and Sialkot, it was absent. Sheath rot was only present in Narowal (16.66%). The highest mean disease intensity of brown spot (40), bacterial blight (44.66) and sheath blight (20) was in Gujranwala. Bacterial blight and sheath blight in Sheikhupura was 8 and 0, respectively. The highest mean disease intensity of blast was 4 in Sheikhupura and absent in Gujranwala and Sialkot. From root, foliar and soil samples Fusarium spp., Nigrospora oryzae, Helminthosporium spp., Curvularia spp., Phytophthora megasperma, Aspergillus spp., Alternaria slternata and Trichocladium spp. were isolated.
  M.Y. Mujahid , N.S. Kisana , Iftikhar Ahmad , Zaheer Ahmad , A. Majid and S.Z. Mustafa
  85 new wheat selections were assessed and compared with the three standard local checks based on the combined analysis in five preliminary wheat yield trials. The combined analysis has the advantage by improving the selection efficiency of the new genotypes tested in different yield trials conducted in the same year and location. Seven out of the total selections tested out yielded the standard check varieties after making the adjustments in the treatment means. This analysis gave an equal chance to the new selections tested in the different trials which otherwise may have been overlooked.
  Zaheer Ahmad , N.S. Kisana , M.Y. Mujahid , Iftikhar Ahmad , S.Z. Mustafa and A. Majid
  Response of various population densities towards yield was tested in Pajnad-88, Pirsabak-85 and Chakwal-86 under natural rainfed conditions. Harvest index, spike length, number of spikelets/spike, grains/spike tend to decrease significantly with increase in seed rate. Plant height and grain weight was not significantly affected by seed rate. Maximum yield was obtained with seed rate of 60 kg ha–1.
  Sh.M. Nawaz , Iftikhar Ahmad , Muhammad Nasir and Atif Nisar Ahmad
  Various techniques for the microdust particles (ericlotoxins) eradication from raw cotton were trialed. Autoclave method was found the most suitable with maximum removal of the Byssinosis causative with minimum effect upon the cotton chemical constituents while washing and flash heating affected the constituents significantly.
  Ameer Khan , Muhammad Iqbal , Iftikhar Ahmad , Naeem Iqbal and Mumtaz Hussain
  A decreasing trend in head diameter, number of achenes per head, hundred achene weight and achene yield per plant to as observed as the level of water stress increased from 100 percent to 25 percent of field capacity. Seed oil content was very sensitive to even mild water stress but showed stability under increasing stress conditions. FH-1 responded better at high level of water stress in respect of all the parameters studied except for hundred achene weight, where FH-3 showed better response.
  Waqas Ahmad , Javaid Iqbal , Muhammad salim , Iftikhar Ahmad , Muhammad Aqeel Sarwar , Muhammad Asif Shehzad and Muhammad Awais Rafiq
  The experiment was conducted to evaluate the growth and performance of oyster Mushroom (Pleurotus ostreatus) on the different substrates. The substrates used in the study were T1 (100% C.W), T2 (50% C.W + 50% Banana leaves), T3 (75% C.W + 25% Banana leaves), T4 (50% C.W + 50% Maize leaves) and T5 (75% C.W + 25% Maize leaves). The numbers of days to complete the mycelium growth and days to reach harvesting stage were decreased in treatments T1 and T5 when compared to others treatments followed by T2. The numbers of matured mushrooms were greater in T1, T2 and T5. Total yield was significantly higher in T1 (125 g), T2 (121 g) and T5 (119.8 g) respectively. The maximum dry weight was produced by T1 (27.2 g) and T2 (25.0 g) respectively over others treatments. The nitrogen contents after harvesting of mushrooms were also affected. These results investigated that 100% cotton waste and 50% cotton waste + 50% Banana leaves are suitable for the cultivation of mushrooms as compared to other growing media.
  Irfan Ahmed Shaikh , Soniya Munir , Farooq Ahmed , Tanveer Hussain and Iftikhar Ahmad
  Food colours are extensively used in food processing industries and their discharge as coloured effluents has become a critical issue. This study investigated an efficient method of removing C.I. Food Red 17 dye from an aqueous solution using Ozone (O3) as an Advanced Oxidation Process (AOP). Ozonation at varied doses, pH and temperatures yielded significant reduction of colour and COD values. An ozone dose of 300 mg/h at pH 7, 9 and 11 yielded more than 90% decolourization in 60, 50 and 20 min of treatments, respectively. Optimal process conditions for set of experiments pertaining to varied dye concentration showed 95% colour removal for 100 ppm dye concentration in 40 min of ozonation using 300 mg/h ozone dose at pH 11. Ozonation at low temperature (30°C) resulted 85% COD removal and 99% decolourization. The study concluded that ozone oxidation is an environmental friendly treatment technique which can remove colour and COD from wastewater to an extent which can make it reusable.
  Irfan Ahmed Shaikh , Farooq Ahmed , Tariq Jami Saifullah Khanzada and Iftikhar Ahmad
  This investigation evaluated a novel idea of reusing wastewater generated during the washing and rinsing stages of soft drink bottling at a beverage factory located in Raiwind, Pakistan. Once the wastewater was collected from the beverage factory, it first underwent ozone (O3) treatment using a bench scale laboratory set-up and then reused in cotton dyeing process. Experimental results showed that 70, 78, 82 and 98% colour removal efficiencies were achieved in a composite wastewater sample at 5, 10, 15 and 20 minutes of O3 treatment, respectively. Turbidity (NTU), COD (mg/L) and pH values were found to be decreasing with increasing ozone exposure time. At the end of ozone treatment, the treated wastewater was used in cotton dyeing process which is also a water-intensive process similar to beverage industry. Finally, the fabrics dyed in O3 treated wastewater were subjected to quality testing in terms of washing, rubbing and colour difference properties. This study concluded that ozonation was an efficient method for the treatment of wastewater from beverage industry and treated water could be successfully reused in cotton dyeing without deteriorating the coloration quality. This method proved to be an eco-friendly process because it did not consume any fresh water and used only discarded wastewater, hence reducing pollution load significantly.
  Farooq Ahmed , Irfan Ahmed Shaikh , Tanveer Hussain , Iftikhar Ahmad , Soniya Munir and Mariyam Zameer
  This review intends to highlight the developments in medical and Health care textiles, current perspective and key challenges regarding the advancements of non-toxic and eco-friendly solutions for health care. This study provides an appraisal on the innovative, intelligent and smart textile products related to Health care and medical textiles. This review also intends to highlight the current state of the technologies as well as future advances and enhancements potential of new textile materials in antimicrobial, surgical sutures and wound dressings. A discussion on classification of antimicrobial textiles, types of surgical sutures and wounds management make this review interdisciplinary.
  Irfan Ahmed Shaikh , Farooq Ahmed , Manzoor-ul-Haq Rajput , Iftikhar Ahmad and Rana Amjad
  The aim of this research work was to assess the feasibility of ozone based treatment method for the removal of key pollutants, such as COD, TSS, conductivity and colour, from the wastewater generated during the operations of a pharmaceutical plant. This investigation evaluated the effectiveness of ozone treatment at varied process parameters like pH, ozone exposure timings and ozone doses in order to find optimized conditions for maximum elimination of water pollutants. The study concluded that adequate results were achieved at higher pH values (10-11), extended ozonation exposures (60-90 min) and maximum ozone concentrations (400-500 ppm). This study suggested that ozonation was an efficient method for the treatment of wastewater from pharmaceutical industry. Since all the experiments were conducted at ambient temperature without using any heat or additional chemicals and thus this method proved to be an environmental friendly technique to reduce pollution load in pharmaceutical wastewaters.
  Iftikhar AHMAD , Muhammad ASIF , Atyab AMJAD and Sagheer AHMAD
  The effects of various NPK levels on growth, flowering, and xanthophyll contents of African marigold (Tagetes erecta, ‘Double Eagle’) and French marigold (Tagetes patula, ‘Yellow’) were investigated. Plant height, number of branches plant-1, leaf area (cm2), total chlorophyll contents (mg g-1), number of flowers plant-1, flower diameter, flower quality, fresh and dry weight of a flower, total flower weight plant-1, blooming period, and days to flowering were maximum with 15:10:10 g m-2 NPK application. However, leaf nitrogen, phosphorus, and potassium contents reached the highest values with 15:20:10, 5:20:10, and 10:20:10 g m-2 NPK application, respectively. Xanthophyll contents were higher in plants fertilized with 15:20:10 g m-2 NPK application. Results suggested that NPK fertilization enhanced growth and improved yield, quality, and xanthophyll contents of marigold.
 
 
 
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